You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary. The Black Tern breeds in loose colonies in freshwater wetlands. Results from the Breeding Bird Survey suggest that the national population has decreased by about 65% relative to 1970, though large declines may have taken place prior to the initiation of population monitoring. [3] The species name is from Latin niger "shining black".[4]. The North American population has declined in recent times due to loss of habitat. Breeding adults have black head, breast, and belly. In the winter, their body is whitish-gray and they are not as conspicuous, but note small size, rather dark gray wings and rump, and black "helmet." Like other terns, the Black Tern has a forked tail, straight pointed bill, slender shape and long, narrow wings. There is a big dark triangular patch in front of the eye, and a broadish white collar in juveniles. American Black Terns belong to the subspecies surinamensis, and Old World Black Terns belong to the slightly larger subspecies niger. When molting, can show a messy, mottled pattern of black and white. The Biebrza Marshes are considered to be one of Europe's most important wetland areas, and are home, to an extraordinarily wide variety of birds, including. The White-winged Black Tern is one of the smaller terns, and the smallest of the three marsh terns. As its name suggests, it has predominantly dark plumage. During migration may be found in flocks with other terns. De moerassen van de Biebrza worden als één van de belangrijkste waterrijke gebieden in Europa beschouwd; ze herbergen een, buitengewoon grote verscheidenheid aan vogels, o.a. Nonbreeding adults have a dark ear spot on a mostly white head. These marks vary in size and are not conspicuous. , Guifette noire, Trauerseeschwalbe, Zwarte stern. In migration and winter, often found in flocks. To have a better experience, you need to: Le site Ontario.ca exige JavaScript pour fonctionner comme il faut, avec rapidité et stabilité. It is uncommon but widespread in Canada. The North American race, C. n. surinamensis, is distinguishable from the European form in all plumages, and is considered by some to be a separate species. Extensive drainage of its breeding grounds wiped out the English population by about 1840. En savoir plus sur les navigateurs que nous supportons. The face is white. Breeds in inland freshwater marshes; migrates cross-country and over open ocean to wintering grounds. The newspaper Frankfurter Allgemeine Zeitung reports that even though many lakes, river courses, and wetlands in Germany have been declared protected areas, these measures are. Its call has been described as a high-pitched "kik"; the sound of a large flock has been called "deafening". A small and delicately built seabird with a thin, pointed bill; long, pointed wings; a shallowly forked tail; and short legs. Nonbreeding adults are gray above, whitish below, with a dusky crown, ear-patch, and mark at the side of the breast. En savoir plus sur les navigateurs que nous supportons. How to use a word that (literally) drives some pe... Name that government! The oldest recorded Black Tern was at least 11 years, 3 months old. As its name suggests, it has predominantly dark plumage. Juveniles are similar to nonbreeding adults but with a brown scaled pattern to the upperparts. What made you want to look up black tern? Black Tern. Black tern. Nests in freshwater marshes and bogs; winters in coastal lagoons, marshes, and open ocean waters. Chlidonias niger A small, graceful marsh tern, black and silver in breeding plumage. Or something like that. Note black skullcap and ear mark. Larger than a Least Tern, smaller than a Common Tern. Intermittent attempts by the black tern to recolonise England have proved unsuccessful, with only a handful of English breeding records, and one in Ireland, in the second half of the twentieth century. lake) swallow". Accéder aux paramètres de votre navigateur. Ontario.ca needs JavaScript to function properly and provide you with a fast, stable experience. Old World birds winter in Africa. Small tern with slender bill and dark gray wings. Adults in breeding plumage are dark gray above with black heads and black underparts. The black tern (Chlidonias niger) is a small tern generally found in or near inland water in Europe, Western Asia and North America. The Inca tern has mainly dark plumage, and three species that mainly eat insects, the black tern, white-winged tern, and black-bellied tern, have black underparts in the breeding season. Small tern with dark gray wings. Learn a new word every day. Small tern with an entirely black body in breeding plumage with silvery wings. Small tern with shallow fork in tail. Your Online Guide To Birds And Bird Watching. It had been banded in Wisconsin and was refound in Louisiana. Test Your Knowledge - and learn some interesting things along the way. Note also the dark gray back and wings—darker than almost all other terns and distinctive in all plumages. Migrants may stop over in almost any type of wetland. © Liliana Chavarria Duriaux | Macaulay Library, See more images of this species in Macaulay Library. The Anous noddies have dark plumage with a pale head cap. Post the Definition of black tern to Facebook, Share the Definition of black tern on Twitter, More than 250,000 words that aren't in our free dictionary, Expanded definitions, etymologies, and usage notes. Juveniles have brownish tinges to back feathers, marked with pale barring. In non-breeding plumage, most of the black, apart from the cap, is replaced by grey. The bill is long, slender, and looks slightly decurved. It is most often seen in its nonbreeding plumage of grey back and tail, whitish underwings and underparts. Scaup, Fuligule milouimin, Borgente, Toppercend. )) Les navigateurs désuets ne disposent pas de caractéristiques sécuritaires permettant d’assurer la sécurité de vos renseignements. Hybridisation between this species and white-winged black tern has been recorded from Sweden[5] and the Netherlands. Vind 9 zinnen in 3 ms. Ze komen uit verschillende bronnen en zijn niet gecontroleerd. It feeds by dipping down and picking food from the surface of water. [6] Two juvenile birds at Chew Valley Lake, England, in September 1978 and September 1981, were also believed to be hybrids; they showed mixed characters of the two species, specifically a combination of a dark mantle (a feature of white-winged black) with dark patches on the breast-side (a feature of black tern, not shown by white-winged black).[7][8]. , roodmus, blauwborst en wouw, naast andere soorten fauna. The Cornell Lab will send you updates about birds, birding, and opportunities to help bird conservation. As far as the two species mentioned - chlidonias niger (, ) and aythya marila (scaup) - are concerned, the Commission ascertained, by using the 'Atlas van de Nederlandse vogels' as an important source, that the scaup is mostly a wintering bird in the IJsselmeer area and the. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! The Black Tern (Chlidonias niger) is a small tern generally found in or near inland water in Europe and North America. Learn about the browsers we support. In flight, the build appears slim. Feeds on insects and small fish. Builds a floating nest of plant matter. Description Small, 25 cm, boldly marked tern with black head, chest and belly.

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