California Gull at Wheatley Harbour on
Lake Erie near Point Pelee on 6 May 2010. Aged as probable third
alternate by its mostly adult plumage, bright yellow bill with usual
red spot but more black than on an adult. Note yellow legs and
moderately dark eye. The Birds of Canada (Godfrey 1986) says iris
colour is "usually brown, sometimes grey or even straw".