Saturday, July 26, 2014

Week in review: 19 – 25 July, 2014

CMBO is pleased to provide weekly summaries of the Cape's birding highlights. Coverage is limited to sightings in Cape May County. Readers should keep in mind that some reports may not be confirmed. The vast majority of information utilized in these reports comes from eBird data and "Keekeekerr" text alerts. Observers are encouraged to send reports and photos to compiler Tom Reed (coturnicops at gmail dot com).

Location Abbreviations/Explanations: CMP (town of Cape May Point), CMPSP (Cape May Pt. State Park), Cove Pool (boardwalk and adjacent marsh/pools, accessible from the west end of Mount Vernon Ave in Cape May), SCMM (South Cape May Meadows), SHPt (Stone Harbor Point).

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WATERFOWL THROUGH KITE
       Unfortunately, Mute Swan numbers held strong at CMPSP's Bunker Pond-- over 40 individuals remained through the period (m. ob.). Gadwall continued to be seen in small numbers between Cove Pool and CMPSP; at least one family group with 3 ducklings continued in the area of SCMM/CMPSP through 24 Jul (VE, TR). CMP's summering Black Scoters remained a constant sight through the week, though recent totals were not available. At least 3 Surf Scoters continued to be seen with this group (m. ob.). Land-based reports of Wilson's Storm-Petrels were in decline from earlier in the month, but whale-watching trips and ferry crossings encountered a handful of birds in nearshore waters most days (m. ob.). Small numbers of Brown Pelicans were noted along the barrier islands and at Cape Island most days (m. ob.). A collection of 9 Tricolored Herons along Stone Harbor Boulevard made for a nice tally 24 Jul (KH), and another small influx of Great Blue Herons arrived at Cape Island with the latest cold front 24–25 Jul (m. ob.). Also undoubtedly front-related, an imm. Mississippi Kite put in a brief appearance over CMP 25 Jul (TR, JA, RC).

SHOREBIRDS THROUGH TERN
       Very rare outside of spring, a trio of Black-necked Stilts found their way to SCMM 20 Jul (m. ob.). Whimbrel were on the move during the evening hours 23 Jul, including 54 that flew over SCMM (SR, TR), and 30 seen from SHPt (KK, DR). SHPt was also home to approximately 250 Western Sandpipers, 250 Semipalmated Plovers, and 13 Western Willets on 23 Jul (KK, DR). Southbound arrivals included a Long-billed Dowitcher over SCMM 23 Jul (TR), and a White-rumped Sandpiper at Pierce's Point the same day (TB). Scarce in midsummer, a Parasitic Jaeger briefly pursued terns and gulls offshore SCMM 24 Jul (TR). There was a slight uptick in Ring-billed Gull reports during recent days, as individuals began to filter south from the Great Lakes and Canada (m. ob.). Lesser Black-backed Gull continued to maintain a heightened presence along oceanside beaches-- a minimum of 10 could be found between SCMM and CMPSP most days (m. ob.), and 6 were noticed at SHPt 23 Jul (KK, DR). Gull-billed Tern is scarce along the bayshore marshes; a single at Reed's Beach 22 Jul is worth mentioning (TR). Another was reported from the marshes near Avalon 23 Jul (MG). 

SWALLOWS THROUGH BLACKBIRD
       There wasn't much news regarding breeding birds this week, but the southbound movements of a growing number of species continued to unfold. Following the passage of a cold front 24 Jul, the morning of 25 Jul brought a fair number of swallows past CMP, including 250+ Barn Swallows, 25 Bank Swallows, and 2 Cliff Swallows (m. ob.). Songbirds were also on the wing the same day, with 150+ Yellow Warblers seen around Cape Island (m. ob.), including 79 engaged in "morning flight" over CMP (TR). Other early-season migrants recorded 25 Jul included Louisiana Waterthrush, Black-and-white Warbler, and several American Redstarts at CMP (MC, TR), along with a Worm-eating Warbler at Higbee Beach (BR). A curious event involved an estimated 2,000 Red-winged Blackbirds that moved past CMP 25 Jul (RC, VE, TR). Most of these appeared to be juveniles. 


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Contributors:
Jesse Amesbury (JA), Tom Baxter (TB), Mike Crewe (MC), Richard Crossley (RC), Vince Elia (VE), Mark Gallagher (MG), Kathy Horn (KH), Kevin Karlson (KK), Tom Reed (TR), Bill Roache (BR), Steven Rodan (SR), Dale Rosselet (DR).

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References:

*eBird. 2012. eBird: An online database of bird distribution and abundance [web application]. eBird, Cornell Lab of Ornithology, Ithaca, New York. Accessed 25 Jul 2014. Available: http://www.ebird.org
*Fogg, B. 2013. Keekeekerr: Recent Text Alerts. Accessed 25 Jul 2014. Available: http://keekeekerr.com/textalerts/keekeekerr

Friday, July 25, 2014

Time to start joining the dots

A series of coincidental, unrelated events and emails have stumbled or snuck into my life of late, and reaffirmed with me something that is a basic essential of life - to see the bigger picture you have to join the dots. If you take each event or decision in your life in isolation, the full significance may be lost, but if you pull it all together - join the dots - things are placed in context and the bigger picture comes looming at you, crystal clear.

After a summer that has seen Lake Lily's Mute Swans make the headlines when they started killing each other, Bunker Pond at the state park continues to collapse as a living ecosystem and our coastlines produce ever fewer beach-nesting birds, it has at times been difficult to press on. Sometimes it's all too easy to feel like a lonely voice in the wilderness, shouting oneself hoarse while facing a solid brick wall. But there is hope; there is an incredible army of people out there who are now calling "Foul!"; who now recognize that it's time we took stock of our surroundings and how we treat it.

Just this morning, I received two emails that were totally unrelated, but which follow a common theme if you join the dots. The first came from John Cecil, New Jersey Audubon's Vice President for Stewardship, and included a link to an online article in northjersey.com. This article, by Bergen County Audubon Society's Don Torino, points out some of the common misconceptions people have about so called 'good' and 'bad' birds. In particular, Torino highlights the problems with Canada Geese in New Jersey - a native species, yes, but one that is not naturally resident here, but which was ill-advisedly deliberately established here for the 'pleasure' of shooting. The article uses straight-talking and facts and is non-emotional.

The second email came from the Xerces Society, an organization that champions the cause for our beleaguered native insect populations. Concern continues to grow over the continuing decline in numbers of our pollinator insects, and if you think they are not important, think of all the food we eat that needs to be pollinated before fruit will form (grapes, apples, pears, peaches, cherries, plums, tomatoes, strawberries, peas, beans, blueberries, cranberries and many, many more). But the Xerces Society offer hope in their latest news item entitled 'Pollinators go to Washington'. More dots to be joined here, as the Xerces Society demonstrate that it is through our legislative system that we have the best chance of really turning things around - and New Jersey Audubon are certainly at the fore here, through Kelly Mooij and her team at the Trenton Policy Office.

Joining the dots again, we can support our lobbyists in getting legislation changed to protect our wildlife and the environment, but I think we have to do our bit too. When I was a child, I think I was in the first generation of kids that didn't learn much about the environment from their parents; now, a couple of generations on, we are paying for that legacy. Time was when kids learned what to touch and what not to touch from their parents; kids learned what wild foods could be harvested and how to recognize them, and they learned how to live 'within' their environment. Of course, pushing back the boundaries of technology and improving our lives is a good thing, but thinking that it means that we don't need to care about our environment, or that the environment is not 'relevant' to those who live in cities is not a good route to travel down - and is patently not true. So we all need to do our bit to understand it a little too - and perhaps the biggest issue we need to get over here is that of what we can trust and what we can't. The internet is full of so much nonsense about the environment and wildlife in general that it can be almost impossible to know what to believe and what not; witness, for example, the storm being whipped up as informed conservationists attempt to save eastern North America's failing wetlands that are becoming inundated by introduced Mute Swans. People are being told that Mute Swans are native and will become extinct if conservationists are allowed to remove them from our wetlands - not true, but people buy into it, because emotions are being manipulated by clever people. As I so often say, if you have a problem with your plumbing, you call in a plumber; there's a problem with the environment - let's call in a trained environmentalist, not someone with a hidden agenda who simply tugs on people's heart strings.

Joining the dots again, let's get wildlife and environmental knowledge back into kids' heads through balanced education programs, so that considered judgements can be made by future generations. If our kids are taught the problems of environments with no insects in them, or environments full of non-native species, then they won't need to rely on jackanory websites for their 'information'.

More joining of dots - a common thread in much of the above is the issue of native versus non-native, whether it be lawns versus meadows, flower borders versus woodland, Mute Swans versus any number of other species pushed out by them, or mantises versus our native pollinators. Time and time again, introductions of non-native species around the world have caused ecosystems to collapse and species to become extinct. Non-native species clearly cause problems in the vast majority of cases and we need to recognize that and do something about it. We also need to recognize that education through a properly structured curriculum is the way to learn how to protect our embattled planet, not through trite nonsense and deliberately emotional heart tugging on the internet.

It's time to start joining the dots.


Joining the dots - friend or foe? I found this insect in my yard just recently... What is it? What is it doing? Should I be concerned? The answers to all these questions come through education and an understanding of the world around us that we should be passing on to future generations. So, would you immediately want to run for your camera or get a big stick if you saw this in your yard? If you picked camera, give yourself a gold star! Books call this creature a Pigeon Tremex, something of a nonsensical name that is simply a direct transliteration of it's scientific name - I would prefer to call it Eastern Horntail. The horntails are large (an inch long!) and intimidating creatures that, like most wasps, suffer because of the habits of just a few species. The vast majority of wasp species will not harm you and most can be handled without a problem (but make sure you know what you are doing first!!). What appears to be an enormous sting at the back end of this insect is actually a casing that holds the ovipositor - an elongated device for laying eggs (and which is modified to become a sting in the social wasps). The ovipositor itself is out of the casing here and can be seen as a thin black spike sticking down between the yellow legs. The female wasp uses this to drill into a tree stump and lay an egg; amazingly, it also provisions the site with a fungus that will speed up wood decay and help provide food for the developing wasp grub. Creatures such as this may seem whimsical, but they are an essential part of the web of life and failing to understand their purpose and their value will not serve us well in the future. Life is not just here for our mere whimsy... Join the Dots. [Photo by Mike Crewe]

Wednesday, July 23, 2014

Youngsters out and about

This year's crop of young birds are slowly finding their wings now and late July into August is a great time to study local birds a bit closer and to practice sorting out the youngsters from the adults. In many bird species it can be very difficult - if not impossible - to tell the season's youngsters from their parents unless you have them in the hand but, conversely, many other species can be aged by their plumage - and sorting them out can be a restful thing to do on a balmy summer day.

Many young songbirds will have been on the wing for some time as they grow quickly and are soon out of the nest, but young waterbirds and birds of prey are only just stretching their wings now and taking their first tentative flights. Here's a few photos of young birds taken around Cape May this week, with some notes to help you check out the youngsters in your area.

Domestic bliss and an element of decorum can be left floundering in the dust in a breeding colony of Laughing Gulls... Juveniles of most gull species initiate a vomiting response from their parents by persistently pecking at red areas on the bill. This ensures that the food is delivered safely, direct to the chick (it's not quite as bad as it seems as birds have a sort of pre-stomach storage area called a crop, from where they are able to regurgitate stored food) [photo by Mike Crewe]

Juvenile Laughing Gulls show some features that are typical of the juveniles of many bird species. Most obvious here are the broad, buffy tips to the upperpart feathers. These probably set the young birds apart from the adults visually, so that they can roam freely for a short while without being mistaken for interlopers looking to steal a territory or a partner. The buffy tips subdue plumage markings that would otherwise be seen as a threat or attraction - features that would be dangerous in the hands of one so young! [Photo by Mike Crewe].

Although Great Blue Herons do not breed with us in Cape May County, they do breed in New Jersey and this year's youngsters are now arriving in the backbay marshes. Note again here, the buffy tips edging the upperpart feathers, as well as the subdued head pattern [photo by Warren Cairo].

Locally hatched and reared, young Forster's Terns are on the wing at Cape May Point now. Again, we see buffy brown tips to the upperparts and a subdued head pattern. As with the Laughing Gulls above, head patterns send powerful signals to potential partners or rivals, so juveniles go straight into a non-breeding type head pattern to avoid needless confrontation. With Forster's Terns, this means a white head with a black 'bandit' mask [photo by Mike Crewe].

If you are on a backbay boat trip, you'll be overloaded with great Osprey photo opportunities. Most nests now contain wing-stretching youngsters, while the more advanced are already taking their first, unsteady flights [photo by Mike Crewe].

That's what I call a nestful! Ospreys typically have two to three young and nests are getting pretty crowded right now. Note in both these pictures the brown-backed adults that contrast with the scaly-backed youngsters [photo by Mike Crewe].


In contrast to our local breeding birds, shorebirds heading down from Arctic breeding grounds right now are likely to all be adults until we get into August. Casting an eye over this group of Short-billed Dowitchers at The Meadows, notice how variable they look in comparison with each other. These are adult birds in various stages of molt from breeding to non-breeding plumage so they show a mixture of two feather types, giving them an untidy look when compared to neat youngsters, whose feathers would now be all of the same age [photo by Mike Crewe]

Much preening takes place during molt cycles and new feathers need to be weather-proofed as they grow through. Many bird species (especially waterbirds like this Short-billed Dowitcher) have a gland at the base of the tail that produces a waterproof secretion. Watch carefully and you will see birds collect oil from the gland in their bill and then work it into the feathers while preening. One other cool feature you might notice on this dowitcher is the flexible tip to the bill - note how the two halves are bent outward near the tip here [photo by Mike Crewe].

And finally - post-breeding wanderings have begun for some species, so it pays to be out there as much as possible now. These three Black-necked Stilts visited The Meadows briefly on Sunday but headed out before the end of the day. Though some brief but heavy rainfall showers have thwarted plans a little, The Nature Conservancy continue to do well in providing good feeding habitat for migratory birds - let's hope that the idea spreads to other properties and we can help tired migrants by providing suitable habitat for them [photo by Karl Lukens]

Saturday, July 19, 2014

Week in review: 12 – 18 July, 2014

CMBO is pleased to provide weekly summaries of the Cape's birding highlights. Coverage is limited to sightings in Cape May County. Readers should keep in mind that some reports may not be confirmed. The vast majority of information utilized in these reports comes from eBird data and "Keekeekerr" text alerts. Observers are encouraged to send reports and photos to compiler Tom Reed (coturnicops at gmail dot com).

Location Abbreviations/Explanations: CMP (town of Cape May Point), CMPSP (Cape May Pt. State Park), SCMM (South Cape May Meadows), Cove Pool (boardwalk and adjacent marsh/pools, accessible from the west end of Mount Vernon Ave in Cape May).

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WATERFOWL THROUGH IBIS
       Numerous observers noted the increasing number of Mute Swans at CMPSP this week. An unfortunate total of 42 was logged there 17 Jul (MH). Gadwall remained a regular sight at CMPSP, SCMM, and Cove Pool through the week. Breeding was confirmed when a hen was seen with 4 ducklings at SCMM 17 Jul (FS). "Scoter Summer" is still going strong around CMP, where as many as 100 Black Scoters and at least 3 Surf Scoters continued to be reported (m. ob.). At least one Wild Turkey was still wandering about CMP, most recently detected along Seagrove Avenue 14 Jul (BR). It was a slow week for seawatching. Small numbers of Wilson's Storm-Petrels continued to be reported from shore at Cape Island. Various vantage points at CMP, CMPSP, and SCMM provided views of the species, and reports also came in from ferry crossings (m. ob.). There was a marked decrease in Brown Pelican reports, though one ventured into Delaware Bay as far north as Reed's Beach 14 Jul (TR). The species is irregular and uncommon that far up the bay. A White-faced Ibis was gleaned from a flock of 102 Glossy Ibis at SCMM 14 Jul (TR), and was seen again 15 Jul (LZ, WC). It has not been seen again. 

 [White-faced Ibis (rightmost bird) with Glossy Ibis at SCMM, 14 Jul. Photo by Tom Reed.]


SHOREBIRDS THROUGH TERNS
       Shorebirds moved past in dribs and drabs throughout the period. Least Sandpiper, Short-billed Dowitcher, and Lesser Yellowlegs were among the more common species migrating south during the last several days. Over 250 Least Sandpipers were counted from SCMM 16 Jul (TR), and 50+ Lesser Yellowlegs zipped by CMP 17 Jul (TR et al.). Whimbrel were moving along both sides of a cold front this week. A total of 31 motored over SCMM during strong south winds ahead of the front 14 Jul (MC, TR), before another 21 navigated past the same site during foggy conditions, just as the front moved through 16 Jul (TR). Less common migrants at Cape Island included a Marbled Godwit over CMPSP 16 Jul (FS et al.), along with an Upland Sandpiper, 6 Western Sandpipers (TR) and at least 1 Stilt Sandpiper (KL et al.) in or above SCMM the same day. Lesser Black-backed Gulls continued to roam ocean side beaches, and a count of 12 was obtained at SCMM 14 Jul (MO'B). Terns featured prominently again this week. A Sandwich Tern dropped in at Bunker Pond, CMPSP on 18 Jul (WC, m. ob.), and 2–3 Roseate Terns continued to put in sporadic appearances on the beaches between SCMM, CMPSP, and CMP (m. ob.). Black Tern should become more regular in coming weeks-- the only recent report was of a single at SCMM on 13 Jul (JC). Caspian Tern will likewise increase through the rest of summer, and several arrived at sites such as Corson's Inlet, Hereford Inlet, and CMPSP in recent days (m. ob.). Gull-billed Tern is generally uncommon at Cape Island, therefore 2 at SCMM 14 Jul, and the same or another there 16 Jul, are worth mentioning (MC, TR). 

[Whimbrel migrating past SCMM, 14 Jul. Photo by Tom Reed.]


DOVES THROUGH BOBOLINK
        A White-winged Dove was discovered at the corner of Lincoln & Lehigh Aves, CMP 11 Jul and continued in the immediate area through 15 Jul (EO, m. ob.). There have been no reports since. This individual represents the second seen in Cape May County this year. CMP's Eurasian Collared-Dove remained elusive, apart from one sighting of it on the wing near Lighthouse & Seagrove Aves 13 Jul (TR). Willow Flycatcher reports have been sparse in recent days, but 2 were heard at CMPSP 17 Jul (TR et al.). There was a noticeable movement of swallows and songbirds over Cape Island 17 Jul, following the passage of a cold front. Swallow estimates included 10+ Cliff Swallows, 20+ Bank Swallows, and 400+ Barn Swallows. (m. ob.). Songbird migrants included 25+ Yellow Warblers and 20+ Bobolinks (m. ob.). 

[White-winged Dove at CMP, 13 Jul. Photo by Catherine Busch.]

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Contributors:
Catherine Busch, Warren Cairo (WC), John Collins (JC), Mike Crewe (MC), Marilyn Henry (MH), Karl Lukens (KL), Emelia Oleson (EO), Michael O'Brien (MO'B), Tom Reed (TR), Bill Roache (BR), Frank Sencher Jr. (FS), Louise Zemaitis (LZ).

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References:

*eBird. 2012. eBird: An online database of bird distribution and abundance [web application]. eBird, Cornell Lab of Ornithology, Ithaca, New York. Accessed 18 Jul 2014. Available: http://www.ebird.org
*Fogg, B. 2013. Keekeekerr: Recent Text Alerts. Accessed 18 Jul 2014. Available: http://keekeekerr.com/textalerts/keekeekerr

Wednesday, July 16, 2014

Ducks - like you never saw them before!

A recurring theme in blog posts this year has been the presence through the summer period of a number of bird species - most notably ducks - that we typically think of as winter visitors. As mentioned before, it seems most likely that these are birds that found weather conditions not conducive to migration at the time in spring when they would normally be heading back north and they just decided to stay further south. This idea is supported to a certain degree by the fact that pretty much all of the over-summering birds are clearly identifiable by their plumage as being second-calendar year birds and thus individuals that would not normally breed this year anyway. There's no pressing need for them to push all the way north to Arctic breeding grounds so typically they might head north some of the way and perhaps summer off the New England coast or the Maritimes, but this year, Cape May will do nicely!

Time constraints (as well as aborted attempts due to the lack of a refuge from tourists for the birds around Cape May) have prevented me from getting photos to build a blog post around these ducks until now; a blustery summer rainstorm gave the birds brief respite and rest on the beach for a short while until Sunset Boulevard was log-jammed with cars and the birds breathed a heavy sigh and headed for the water again. However, the opportunity was taken and I spent a short time studying a party of Black Scoters at a time of year when these birds are not normally that easy to study.

One thing that immediately strikes you about ducks in summer is how scruffy and unkempt they look. Something else also strikes you quite quickly - they appear to have no wings!! This latter point is explained by the fact that most ducks, geese and swans molt all of their flight feathers (and often tail feathers) in one go, a strategy that renders them flightless for a few weeks. For most birds this would be suicide; most birds use flight as a quick get-away from potential danger, so they molt their flight feathers in sequence, usually starting in the middle of the wing and molting one or two at a time toward the two ends. This allows them to retain the power of flight throughout. Waterfowl, however, gain protection from most potential predators by simply staying out on the water, so can afford to dump a whole bunch of feathers in one go and get the whole messy business of molting out of the way as quickly as possible.

The easiest time to go through this annual, complete molt of feathers is in late summer, toward the end of the breeding season and many species go through short molt migrations, when the bulk of a population of a species heads to a traditional molt location, giving the birds the added protection of 'safety in numbers'. A classic example of this takes place in Europe, when almost all of the Common Shelducks in the UK migrate to the north German coast for a couple of months to molt, then migrate back again. Since most waterfowl breed a long way north of where most of us live, we seldom get to see these molting birds, so their appearance at this time of year is unfamiliar to us. Here are some recent photos of some surprising ducks...


These two pictures were the main inspiration for this post... I received these photos recently as an identification request - and it is quite easy to see why! This spiky rag-tag bundle of feathers is a first-summer male Long-tailed Duck, a species few people see in July without making a huge effort to head north to the tundra. Though the eponymous tail and the flight feathers are missing, this bird can be identified to species by the head pattern and the dark bill with pale pinkish patch. This individual has been hanging out this summer at Longport Boulevard, Atlantic County and certainly makes for a great mystery photo candidate... [photos by Kelly Hunt]

Cape May Point's summering Black Scoters (there's a few Surf Scoters around too) also make for some identification challenges. Look closely at this female and you can pick out the blacker-looking new feathers from the raggedy and faded brown ones. The molt process can render the birds less waterproof than usual, which is why they like to spend time ashore if they can get it. On this bird, you can see a large pale patch on the wing, formed by the shafts of the new primary feathers which are just growing through. Recent reports of White-winged Scoters at the point probably originate from confusion caused by this pale patch on the Black Scoters. At this time of year, White-winged Scoters would have no secondaries - so no white wing! If you have a pond or park nearby, check out the local Canada Geese right now and you will probably see the same bundle of feather shafts coming through on the wings [photo by Mike Crewe].

Something else you seldom see - the huge feet of Black Scoters! Diving ducks need big flippers to aid underwater swimming, but it does make them rather ungainly on land [photo by Mike Crewe].
 
 
If you have over-summering ducks near you, check them out regularly over the coming weeks and you will see the gradual change as flight feathers grow back in and the plumage becomes less patchy as old, worn feathers are replaced by crisp, new ones.

Monday, July 14, 2014

Semipalmated Sandpipers in the news

By now, many of us will know of the amazing feats of endurance that migratory birds go through, but as each tale comes in, it still manages to amaze us. As technology continues to improve, we are finding more and more ways to gain insights into the movements of migratory birds, supplying us with invaluable data which allows us to make well-infomed decisions when it comes to helping declining populations.

Perhaps paramount in importance when it comes to studies of migratory birds has been the development of ever-smaller pieces of hardware that allow us to attach equipment to birds in a way that doesn't impede their everyday lives. While we know a lot about where migratory shorebirds breed and where they spend the winter, we still need to know more about their migration routes and the timings of their migrations. This information can be gained by attaching geolocators (small data logging units) to birds and here, NJA's vice-president for research, David Mizrahi offers us the latest insight from this technology:


FIRST EVER GEOLOCATOR RESULTS FOR A SEMIPALMATED SANDPIPER SHOW REMARKABLE YEAR-LONG ODYSSEY

Biologists from Manomet Center for Conservation Science, New Jersey Audubon, U.S. Fish and Wildlife Service, Kansas State University, the Wildlife Conservation Society, the Canadian Wildlife Service, Simon Fraser University, the Government of Nunavut, and Université de Moncton have coordinated the first effort to use geolocators to understand the migratory pathways of this species.

Geolocators record changes in ambient light levels, especially the rapid changes apparent at sunrise and sunset. Typically, daylight length is used to determine latitude, while the midpoint between sunrise and sunset is used to determine longitude. Recording light levels over time produces data that can be used to estimate locations of a bird throughout the year. To retrieve data from a geolocator, the bird must be recaptured.

Analysis of the data from the geolocators is key to understanding what the tiny units have recorded during the past year. The map [below] shows the first ever track of an entire year in the life of a Semipalmated Sandpiper from the eastern Arctic, the population which appears to have decline significantly over the last 30 years. This particular bird, a male, flew a total distance of ~16,500 kilometers, (~10,300 miles) in the past year. He also made a remarkable six day, 5,250 kilometer (nearly 3,300 miles) nonstop flight across the Atlantic Ocean from James Bay to South America, before moving on to his wintering area in Brazil.


Semipalmated Sandpiper with geolocator fitted to its leg [photo DavidMizrahi/NJA]
 
Data mapped from a recovered geolocator, fitted to a male Semipalmated Sandpiper (click on picture for a larger version) [photo David Mizrahi/NJA]

You can help!! Adult Semipalmated Sandpipers will be returning through our area in the coming weeks, with juveniles appearing through September and October. Keep a close eye on birds and report any that you find wearing colored leg flags, taking care to record the alphanumeric symbols as accurately as possible. Sightings can be reported via the bird banding website and your reports will go toward providing researchers with valuable data on these birds [photo by Mike Crewe].

Saturday, July 12, 2014

Week in review: 5 – 11 July, 2014

CMBO is pleased to provide weekly summaries of the Cape's birding highlights. Coverage is limited to sightings in Cape May County. Readers should keep in mind that some reports may not be confirmed. The vast majority of information utilized in these reports comes from eBird data and "Keekeekerr" text alerts. Observers are encouraged to send reports and photos to compiler Tom Reed (coturnicops at gmail dot com).

Location Abbreviations/Explanations: CMP (town of Cape May Point), CMPSP (Cape May Pt. State Park), SCMM (South Cape May Meadows), Cove Pool (boardwalk and adjacent marsh/pools, accessible from the west end of Mount Vernon Ave in Cape May), WMA (Wildlife Management Area-- Tuckahoe).


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WATERFOWL THROUGH KITE
       A disturbingly large congregation of Mute Swans remained at Tuckahoe WMA this week, with 54 individuals counted there 8 Jul (CB, CM). CMP's summering Black Scoter flock still numbered between 80–100 individuals through the period, along with at least 3 Surf Scoters (m. ob.). A Red-breasted Merganser, also summering locally, was again reported from Jarvis Sound 6 Jul (SGa). Gadwall continued to be reported on a daily basis from Cove Pool, SCMM, and CMPSP, with a maximum of 7 at SCMM on 8 Jul (VE). Evidence of breeding at these sites remained elusive. Another land-based report of Great Shearwater was logged this week, when one flew south past Sunset Beach 9 Jul (m. ob.). Wilson's Storm-Petrels continued to be seen in small numbers from CMP, and 7 were tallied during the New Jersey portion of a ferry crossing 10 Jul (JS). Occasional reports of Brown Pelicans continued to trickle in as the week progressed; the period's max of 6 was notched at Poverty Beach on 6 Jul (AC). Great Blue Herons are largely absent from Cape May County during late-spring and early-summer, but apparent southbound migrants start to appear in Jul as demonstrated by 9+ over CMP on 5 Jul, following the passage of a cold front (TR et al.). Jul also likely serves as the peak for Glossy Ibis migration-- 150+ headed south past Cape Island 5 Jul (TR et al.). A Mississippi Kite over SCMM and CMP 5 Jul was undoubtedly a product of northwest winds (m. ob.). 
[Great Blue Heron arriving from offshore and 
dropping into SCMM, 5 Jul. Photo by Tom Reed.]
SHOREBIRDS
       Piping Plover continues to struggle mightily this summer, with just a single pair still attempting to nest in the county as of 11 Jul (NJDFW). On a happier note, shorebird migration picked up the pace this week. Southbound American Avocets were exceptional on multiple days at Cape Island. A brace was observed fleeing Cove Pool toward Delaware 8 Jul (DW), followed by a trio over SCMM 10 Jul which eventually exited toward the west (WC, AC). Northerly winds produced a light but steady flight of shorebirds at SCMM 9 Jul, including 42 Lesser Yellowlegs and 48 Short-billed Dowitchers (SR). The next day, rainy conditions teamed up with northwest winds to produce another morning movement that included 30+ Whimbrel, 40+ Lesser Yellowlegs, 60+ Short-billed Dowitchers, and 100+ Least Sandpipers over SCMM 10 Jul (m. ob.). Upland Sandpiper has unfortunately become a scarce fall migrant at Cape May, therefore one was a most welcome sight in the dunes at SCMM 5 Jul (VE, m. ob.). The season's first Stilt Sandpiper flew over West Cape May 9 Jul (MO'B). 
[Upland Sandpiper at SCMM, 5 Jul. Photo by Tom Reed.]
JAEGER THROUGH TERNS
       Increased numbers of gulls and terns were feeding in "the rips" offshore CMP this week, and this influx likely drew in a slightly unseasonal Parasitic Jaeger, reported from the Coral Avenue dune crossover 8 Jul (SGl). Scattered Lesser Black-backed Gulls continued to occupy beaches along the ocean side and at Cape Island, including 6+ encountered at SCMM in recent days (m. ob.). Terns were also in the news this week. The year's first Sandwich Tern, an adult, was photographed at SCMM 7 Jul (m. ob.), and the same or another was noted at CMP 9 Jul (MK). Rare in Delaware Bay north of Cape Island, another Sandwich Tern put in a brief appearance at Reed's Beach 8 Jul (TR). At least 2 Roseate Terns played hide-and-seek with birders between SCMM and CMP through the week, and a Black Tern visited CMPSP 8 Jul (SGl). Tuckahoe WMA continued to host Gull-billed Terns on a regular basis, and at least 4 were studied in the impoundments there 8 Jul (CB, CM). 
 [Roseate Tern at CMPSP, 8 Jul. Photo by Karl Lukens.]
COLLARED-DOVE THROUGH BOBOLINK
       After a lengthy absence, a/the Eurasian Collared-Dove surfaced at CMP this week, with the most recent report coming from the corner of Lehigh & Lincoln Avenues 11 Jul (WC, m. ob.). Observers are encouraged to continue reporting any sightings of this species. Cliff Swallow occurrences in Cape May seem intensely tied to westerly winds-- 8+ were found at SCMM and CMPSP during strong northwest winds 5 Jul (m. ob.). New Jersey's 4th Brown-headed Nuthatch briefly made its presence known at the Coral Avenue dune crossover, CMP 5 Jul (MO'B, LZ). It has not been reported since. Perhaps not surprisingly, all New Jersey records of this southern species have occurred at CMP, and 3 have been discovered in the dune-top pines along the bay side of town. Southbound songbird migration is just starting to fire up. The aforementioned cold front produced a few migrants over SCMM and CMP 5 Jul, including 9 Indigo Buntings and 4 Bobolinks (m. ob.). Single Bobolinks were also noted flying over Reed's Beach 6 Jul and 11 Jul (TR). 


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Contributors:
Catherine Busch (CB), Warren Cairo (WC), Alan Crawford (AC), Vince Elia (VE), Sam Galick (SGa), Steven Glynn (SGl), Mark Kantrowitz (MK), Karl Lukens, Christina Marks (CM), NJDFW (New Jersey Divison of Fish & Wildlife staff), Michael O'Brien (MO'B), Tom Reed (TR), Steven Rodan (SR), Jeff Shenot (JS), Daniel Weeks (DW), Louise Zemaitis (LZ).

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References:

*eBird. 2012. eBird: An online database of bird distribution and abundance [web application]. eBird, Cornell Lab of Ornithology, Ithaca, New York. Accessed 11 Jul 2014. Available: http://www.ebird.org
*Fogg, B. 2013. Keekeekerr: Recent Text Alerts. Accessed 11 Jul 2014. Available: http://keekeekerr.com/textalerts/keekeekerr
*JerseyBirds [electronic mailing list]. 2014. July archives. Accessed 11 Jul 2014. Available: https://lists.princeton.edu/cgi-bin/wa?A1=ind1407&L=Jerseybi