Slaty-backed Gull vs Vega Gull

Slaty-backed Gull

Larus schistisagus

Large1.3 kgCoastal

It is tied with the yellow-footed gull for fourth-largest gull species, measuring 55–68.5 cm (21.7–27.0 in) in length, 132–160 cm (52–63 in) in wingspan, and 1.05–1.7 kg (2.3–3.7 lb) in weight. Among standard measurements, the wing chord is 40 to 48 cm (16 to 19 in), the bill is 4.8 to 6.5 cm (1.9 to 2.6 in), and the tarsus is 6 to 7.6 cm (2.4 to 3.0 in). It has a white head, belly, and tail with a dark slaty-gray back and wings with a broad white trailing edge. The wings and back are slightly darker than those of the western gull (Kodak grey scale 9.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Original: ほくなん. This edit: MPF · Public domain

Vega Gull

Larus vegae

The Vega gull is similar to the herring gull but is slightly darker grey above. The head of the Vega gull is heavily streaked with brown in winter, especially on the back and sides of the neck forming a collar. The legs are usually bright pink. First- and second-winter Vega gulls are darker than the similar Mongolian gull, notably on the crown of the head where Mongolian gulls even in first- and second-winter are a bit paler. Almost the full body of first- and second-winter Vega gulls displays darker brown flecks and streaks.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Marco Mussita · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Slaty-backed Gull and Vega Gull.