成鳥 © Marco Valentini eBird S62898981 Macaulay Library ML 196654141
幼鳥 © Christoph Moning
成鳥 © Stephen Davies
成鳥 © Stephen Gast
© James Kennerley
+ 2
© Stephen Gast

Hartlaub's Gull Chroicocephalus hartlaubii

登入 可看見你的標章

辨識

MERLIN 技術支援

A medium-sized, pale-gray-backed gull of coastal waters and human settlements. Breeding birds have dark eyes and a very faint chalky-gray hood, which non-breeding birds lack. This adaptable omnivore is the commonest gull of the Benguela Current, but its penchant for eating offal means it is expanding its range eastwards. The similar Gray-hooded Gull differs from Hartlaub’s Gull by being larger, having a yellowish-white eye, a longer redder bill, and a discrete grayish hood in breeding plumage. Immature Gray-hooded Gulls have a black terminal tail band which juvenile Hartlaub’s Gulls lack.

MERLIN 技術支援