Thursday, December 2, 2010
MA - Kumlien's Iceland Gull - 11/30
presumed Kumlien's Iceland Gull - first-cycle, Turner's Falls, Franklin Co., MA. November 30th, 2010. Found late on a dull afternoon resulting in rather poor quality images. Field impression and thoughts led to this bird being identified as a darkish Kumlien's Gull but can Thayer's be ruled out? I'm feeling less sure having reviewed the images.
Another one of the four first-cycle Kumlien's Gulls from the evening of November 30th. A dark individual with a peculiar hoar-frosted cast to much of the upperparts. For a few heart-pounding moments I was thinking about Thayer's but the primary tips looked too broadly fringed with pale and the bill was distinctly pale at the base of the upper and lower mandibles which I believe would be too light for Thayer's in early December. Anyhow, an interesting bird which I'd like to see again in better light.