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Dragonflies counted flying north
past Miami Beach, Villas, Cape May Co., NJ, 16 August 2012.
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|||||||
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Species
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10:41 - 11:11
|
|
11:15 - 11:45
|
|
12:10 - 12:40
|
|
Totals
|
|
Common Green Darner
|
4
|
|
|
|
1
|
|
5
|
|
Swamp Darner
|
363
|
|
758
|
|
666
|
|
1787
|
|
Great Blue Skimmer
|
5
|
|
3
|
|
5
|
|
13
|
|
Spot-winged Glider
|
1
|
|
1
|
|
8
|
|
10
|
|
Black Saddlebags
|
|
|
4
|
|
3
|
|
7
|
|
Carolina Saddlebags
|
3
|
|
14
|
|
11
|
|
28
|
|
saddlebags sp.
|
1
|
|
|
|
|
|
1
|
|
unidentified
|
|
|
4
|
|
4
|
|
8
|
|
Totals
|
377
|
|
784
|
|
698
|
|
1859
|
Perhaps two things stand out as of particular interest here; firstly, the relatively low numbers of other dragonfly species compared with the high numbers of Swamp Darners - why so many of a single species? Secondly, the presence of Great Blue Skimmers, which are not normally thought to be migratory.
Swamp Darner - one of over 1700 counted heading north at Villas today [photo by Tony Leukering].
