non-breeding ring-billed gulls terns
nilotica
(protonym Sterna nilotica
), also known as marsh tern, photographed at Lake Awash, Ethiopia (Africa).
Image:. Dan Logen, February 5, 2011 (with permission) [velociraptorize]
Nikon D300s, 600 mm lens, ISO 500, f/10, 1 / 1600 sec.
Question:
mystery of Africa, this bird occurs in all continents of the world except Antarctica. It is also a small isolated population in northern Germany and Denmark. Can you name this bird and tell me something unusual in his habits or story
answer:
it is an immature or adult non-breeding ring-billed gulls terns Gelochelidon nilotica
. (Immature birds can be distinguished from adults by the low brown spots on the mantle - the back).
ring-billed gulls terns are colonial breeders in fresh and brackish waters, including wetlands, lakes, beaches, marshes, water, sewage lagoons, irrigated cropland and pasture, especially Please saline coastal lagoons and inland lakes saline. They are rarely found on the ocean. Basically, this is a species within, but they are so mobile when not playing, show a clear preference for swamps and lagoons near the coast.
Gelochelidon
-billed Tern differs from most other terns in the shallow fork in the tail, wings wider and thicker, rather short, black bill. Its name recalls the shape of its beak, but its slow flight is very similar to the seagulls, too. It especially may be confused with the sandwich tern, common tern, but thicker beak is black gull bill misses the point of the sandwich tern light bill and the wings are wider than the wings of the sandwich tern, too.
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