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Consequently, the term "gorgonian coral" is commonly handed to multiple species in the order Alcyonacea that produce a mineralized skeletal axis (or axial-like layer) composed of calcite and the proteinaceous material gorgonin only and corresponds to only one of several families within the formally accepted taxon Gorgoniidae (Scleractinia).
Waterfowl flyways in the United States. The Atlantic Flyway is in violet. The Atlantic Flyway is a major north-south flyway for migratory birds in North America. The route generally starts in Greenland, then follows the Atlantic coast of Canada, then south down the Atlantic Coast of the United States to the tropical areas of South America and the Caribbean. [1]
The East Atlantic Flyway is a migration route used by about 90 million birds annually, passing from their breeding areas in the United States, Canada, Greenland, Iceland, Siberia and northern Europe to wintering areas in western Europe and on to southern Africa. [1] [2] It is one of the eight major flyways used by waders and shorebirds. [3]
Bird cliffs are found on islands in the North Atlantic and Arctic, such as the Faroe Islands, Iceland, the Svalbard archipelago and on islands off Northern Norway. Birds that nest in large numbers on bird cliffs include auks, kittiwakes, barnacle geese, and typical Old World vultures. The number of breeding couples may exhibit large variations ...
Here the rare piping plover and other beach-nesting birds raise their young, so public access is limited or even entirely prohibited at times. Great blue heron The beach areas provide fragile ecosystems for birds whose populations have already been impacted by development, so Holgate is closed to all public during the nesting season; Little ...
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Deep cup nest of the great reed-warbler. A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too ...
It is one of only a few bird species to migrate from breeding grounds in the Southern Hemisphere to the Northern Hemisphere, the normal pattern being the other way around. This shearwater nests in large colonies, laying one white egg in a small burrow or in the open grass. These nests are visited only at night to avoid predation by large gulls.