Relict Gull (Ichthyaetus relictus) [XC131997]
by id from Ononskiy rayon, Zabaykalsky Krai, Russian Federation (call)
Subspecies
No subspecies.
Similar Species
Non-breeding adults are larger, stockier, thicker-billed and longer-legged than Brown-headed Gull (Larus brunnicephalus) and Black-headed Gull (Larus ridibundus), with more uniformly dark-smudged ear-coverts and hind crown, white-tipped primaries, prominent, isolated black subterminal markings on outer primaries, and no white leading edge to outer wing. Breeders are black-hooded (including nape), with broad, broken white eye-ring.
References
See References.