This is my contribution to Cee’s Fun Foto Challenge: Male vs Female prompt.
Male and female American Avocets feeding on a slough near Punnichy, Saskatchewan, Canada. The foreground bird with the straighter bill is the male.
A male Eurasian Blue Tit feeding the female during incubation. Photographed using a specially constructed nestbox in a garden in Hatherton near Nantwich in southern Cheshire, England.
Female and male Wilson’s Phalarope on Middle Quill Lake, Saskatchewan, Canada. The more colourful bird in the foreground is the female. In the Phalarope family of birds the males incubate the eggs and as a result have more subdued plumage for camouflage.
Male and female Common Terns mating on the Lake Huron shoreline in Southampton, Ontario, Canada.