Slaty-backed Gull. Relatively similar to other large gulls, it is usually identified in flight by its distinct wing pattern. A large gull from N Asia, the only large dark-backed gull in its breeding range. Remember that true adult Slaty-backed Gulls hardly develop black on the bill, hence birds that do show a black line on the bill are suspecious and should be checked for any immature characteristics check white underwing on dark scalloped patterns! Little gull. Similar size to Slaty-backed, but Western has upperparts slightly paler or similar in shade Kodakbut white primary tips smaller at rest, bill more bulbous-tipped and typically brighter in winter orange-yellow, without dark distal marksorbital ring yellow, eyes often dusky, and, in winter, has little or no dusky head and neck streaking. Version
A large, heavy-bodied gull with a thick bill and rounded head. 1; 2; 3; 4; 5; 6; 7; 8. Slaty-backed Gull - Ian Davies Choose a region to view Weekly Bar Chart.
Remember that true adult Slaty-backed Gulls hardly develop black on the bill, hence birds that do show a black line on the bill are suspecious and should be. Identification of Slaty-backed Gull (schistisagus) Males may approach jizz and size of Great Black-backed or Glaucous Gull, smallest females approach.
The bird below is somewhat like Western Gull, but Steve points to the dark eye and heavy markings on the head and chest.
No part of this web site may be reproduced without written permission from Mitch Waite Group. No winter streaking on head. The ventral part of the bird, or the area between the flanks on each side and the crissum and breast.
Identifying these gulls can be tricky, but the washed out appearance of this first winter Slaty-backed Gull is fairly easy to pick out and adult birds would be very easy to identify too. Youtube Blog. On the upperwings, tertials and wing-coverts are pale with slightly barred inner greater coverts.
Slaty backed gull identification chart
|Wing-tip in settled birds similar to Western Gull, with white primary tips beyond tertials, and beyond tail-tip. Illegal egg collecting by people from nearby villages may occur.
The legs are pink and short when compared with those of similar-looking gulls, and the body appears more stout. Larus schistisagus.
Video: Slaty backed gull identification chart Slaty backed Gull at Goat Island, Niagara Falls NY
It is similar in appearance to the western gull and the glaucous-winged gull. Slaty-backed gull Conservation status.
Slatybacked Gull, Larus schistisagus A New Bird for the Thai Checklist.
identifying first-cycle Slaty-backed Gulls remains an ID chal-. TABLE 2. Structure of a “Cook Inlet Gull” (Hybrid American Herring x Glaucous-winged Gull ).
Bill. The range map given for Slaty-backed Gull in Gulls of Europe, Asia and North America (Helm Identification Guides) by Olsen & Larsson (below) suggests that it .
In synch with their slender aerodynamic appearance, terns have dagger-like sharp bills, the gulls shorter, stronger bills with a slightly hooked tip to match their tough demeanor, and the Black Skimmer a unique bill with the lower half longer that the upper half.
Vega and American Herring Gull generally smaller with paler grey upperparts darkest in Vega and more solid black wing-tip, typically lacking pale streaks and line of spots: the character is not foolproof, as some Vega and American Herring show limited black on wing-tip, and some Slaty-backed lack white subterminal spot on P8.
The birds are drowned in fish nest and threatened by long-line fisheries. Parts of a Flying bird X. Retrieved 26 November Its eyes are yellow.