A Reference Guide to Gulls of the AmericasThis new authoritative reference guide covers the 36 species of gulls that occur in North and South America, contains 1,160 photographs illustrating the many plumages gulls display as they mature, and provides descriptions by two of North America's top gull experts. |
Contents
Grayhooded Gull Larus cirrocephalus 25b European Herring Gull L a argentatus | 3 |
Redlegged Kittiwake Rissa brevirostris 33 Glaucouswinged Gull Larus glaucescens | 9 |
PRIMITIVE WHITEHEADED GULLS H5 Thayers Gull KumliensIceland Gull | 16 |
Belchers Gull Larus belcheri Gull | 366 |
Genus Larus in part H11 Glaucous Gull x European Herring Gull | 376 |
Common terms and phrases
adult ADULT NONBREEDING Alaska America AMERICAN HERRING GULL averages base basic bill birds blackish bleached breeding broad brown brownish California casual Coast common compare with photo Complete contrasting coverts cycle dark dark brown darker differences distal distinct Distinguished dusky extensive eyes fairly feathers FIRST-CYCLE flesh pink flight GLAUCOUS-WINGED GULL gray upperparts head head and neck hood HYBRID IDENTIFICATION individual inner primaries Kodak Kumlien's lack Lakes larger late legs less mainly markings medium mirror molt mottling narrow Note orbital ring outer primaries overall pale gray paler panel pattern PB molt plumage PRESUMED produces range rarely relatively scapulars SECOND-CYCLE secondaries shape similar slaty gray slightly smaller species Steve N. G. Howell streaking structure subterminal tail tertials THAYER'S GULL third THIRD-CYCLE tips typically underparts upperparts upperwing coverts usually variable Western Gull white tips whitish wing wingtips winter yellow