In December, this individual had an all jet-black bill with retained juvenile feathers covering some of the lower wing covert feathers.
In late February, the base of the lower mandible and parts of the culmen displayed an obvious faded gray appearance. The tailband looked somewhat reduced in flight and the wing coverts were a bit faded and worn.
Overall, no dramatic change was noted. Although, during my 2nd visit, it vocalized regularly everytime it lifted off and especially when landing. It did not vocalize once during my 3 hour visit in December. Perhaps after residing here for a couple of months, this juvenile to 1st winter has become a bit more assertive.
Aside from Black-legged Kittiwakes that tend to favor this location, Port Washington hosted an Ivory Gull in Januaray of 1998. The marina is always manned by fisherman who do indeed hook some nice catches.
The black-legged kittiwake was first described by Carl Linnaeus in his landmark 1758.
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