White-eyed Gull (L. leucophthalmus) & Sooty Gull (L. hemprichii)
White-eyed Gull L. leucophthalmus adult with adult winter Sooty Gull (L. hemprichii), March 04 2002, visitor's centre of Nabq National Park, SE Sinai, Egypt.
Compare the flight silhouette of the adult White-eyed Gull
adult Sooty Gull (top). Note the characteristic droopy, long and thin bill. In
White-eyed Gull the wings are pointed and less broad than in Sooty Gull. Note
the broad white trailing edge in the Sooty Gull.
Sooty Gull has rounded and broader wings compared to White-eyed Gull, and
a more swinging flight-impression, unlike the stiff flight of White-eyed
Gull. In flight the stronger neck and breast are obvious in Sooty, creating a
profile more in line with white-headed gulls from the Western Palearctic.
White-eyed Gull resembles smaller gulls in this respect, accentuated by
the long, pointed and less broad wings. Note the obvious white trailing
edge which is much thinner in White-eyed Gull.