Roger Powell / Male dark phase Arctic Skua (Stercorarius parasiticus) courtship feeding light phase female. Varanger, Finmark, Norway, May.
00531507
Fred Bavendam / Elongate Surgeonfish (Acanthurus mata), light and dark morphs, being cleaned by juvenile Redfin Hogfish (Bodianus dictynna) and Blackspot Cleaner Wrasse (Labroides pectoralis), Bali, Indonesia
01447825
Chris Mattison / Garden bumblebee (Bombus hortorum) dark form, against white background, Sheffield, England, UK. April.
01447824
Chris Mattison / Garden bumblebee (Bombus hortorum) dark form, against white background, Sheffield, England, UK. April.
00520178
Sergey Gorshkov / Snow Goose (Chen caerulescens) dark morph called a Blue Goose, Wrangel Island, Russia
00517906
Michael Quinton / Red Fox (Vulpes vulpes) cross fox, Alaska
00517484
Konrad Wothe / Indri (Indri indri) dark morph, Madagascar
00517483
Konrad Wothe / Indri (Indri indri) dark morph, Madagascar
01416521
Nick Upton / Eleonora's falcon (Falco eleonorae) dark morph flying overhead Samos, Greece, August.
00497962
Donald M. Jones / Reddish Egret (Egretta rufescens) dark morph, Sian Ka'an Biosphere Reserve, Mexico
00497961
Donald M. Jones / Reddish Egret (Egretta rufescens) dark morph flying, Sian Ka'an Biosphere Reserve, Mexico
00497960
Donald M. Jones / Reddish Egret (Egretta rufescens) dark morph flying, Sian Ka'an Biosphere Reserve, Mexico
