Slaty-backed Gull (schistisagus) / オオセグロカモメ / 큰재갈매기

(last update: December 2015)

Kim Seog-min (South Korea)
Hideo Shimura (Japan)
Peter Adriaens (Belgium)
Mars Muusse (Netherlands)

hybrid Glaucous-winged x Herring Gull (glaucescens x smithsonianus) 2nd cycle (2CY), October 28 2011, Elwha River Mouth, Clallam Co. Washington, USA. Picture: Steve Mlodinow.

Please visit Steve's Flickr photostream, for many more images. And also Dave Appleton's blog on hybrids!

Hybrid combo also known as "Cook Inlet Gull". Broad arm and inner primaries much too pale for 2nd gen inner primaries of Herring Gull. Note relatively slender bill with pink bill base. Pale grey upperparts indicated by recently replaced scaps.