If you go to Barnegat Light, be sure to pick a day with little wind and preferably dry weather; even then, be sure to wrap up very warm and try not to get wet from sea spray as this can quickly chill you. It can be deceptively cold in such an exposed location.
(Harlequin Ducks at Barnegat Light today. Click picture to enlarge.)
(First-winter female King Eider at Barnegat Light. King Eiders have a different profile to Common Eiders, largely due to the different bill structure. In this species, the bill is shorter than in Common Eider and there is an obvious bump on the bridge of the nose (corresponding with the bill shield of the male). The bird can be aged as a youngster by the lack of an obvious white line on the trailing edge of the secondaries (note the poorly-marked line here) and also by the flank patterning which unfortunately can't be seen in this shot!