31 March 2016

March 2016 Quiz

The pointed primary tips help age this individual as a 1st cycle. The short, thin legs, and apparent small bill suggest a female type, large white-headed gull. California Gull is ruled out by the all black bill. The darker upperparts look much like a 2nd cycle Lesser Black-baked, but this bird is in its first plumage cycle. In addition, the pale tips to the greater coverts and paler upper scapulars and mantle feathers are wrong for that species. This month's quiz bird is a 1st cycle Herring Gull, photographed in Will County, Illinois on 15 February 2016.