Vega Gull L. vegae
December 19th 2003 Choshi Chiba Japan
Japanese Cormorant, Vega Gull, Black-tailed Gull.
This Vega Gull shows a dark greater covert bar. But its mottled, light-colored overall impression unlike smithsonianus looks typical for Vega Gull.
Left to right: Black-tailed Gull, Slaty-backed Gull, Vega Gull.
Juvenile. This uniform belly is very dissimilar to typical mongolicus, but can recall smithsonianus. We can say, colorations and textures of Vega Gulls are intermediate between mongolicus and smithsonianus on average.
This is showing an advanced, pink-based bill.
The left one looks somewhat unusual. The right bird is a typical 1st winter.
2 1st winter birds. Note the thin-streaked neck and lighter greater coverts that differ from smithsonianus.
Smithsonianus on the same day