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Seabirds (also known as marine birds) are birds that are adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution , as the same environmental problems and feeding niches have resulted in similar adaptations.
A single egg is laid per nesting attempt, and usually a single nesting attempt is made per year, although the larger albatrosses may only nest once every two years. Both parents participate in incubation and chick rearing. Incubation times are long compared to other birds, as are fledging periods. Once a chick has fledged there is no further ...
The Pelecaniformes / p ɛ l ɪ ˈ k æ n ɪ f ɔːr m iː z / are an order of medium-sized and large waterbirds found worldwide. As traditionally—but erroneously—defined, they encompass all birds that have feet with all four toes webbed. Hence, they were formerly also known by such names as totipalmates or steganopodes.
All procellariids lay a single white egg per pair per breeding season, in common with the rest of the Procellariiformes. The egg is large compared to that of other birds, weighing 6–24% of the female's weight. Immediately after laying the female goes back to sea to feed while the male takes over incubation.
Appearance. move to sidebar hide. Help Subcategories. This category has the following 18 subcategories, out of 18 total. A ... Birds of subantarctic islands (4 C, 56 P)
The name comes from the Old Norse Fúlmár meaning "foul-mew" or "foul-gull" because of the birds' habit of ejecting a foul-smelling oil. [2] The type species was designated by George Gray in 1855 as the northern fulmar. [3] [4] As members of Procellaridae and then the order Procellariiformes, they share certain traits.
It has a population of fewer than 50 birds and a breeding range of just 9 km 2 (3.5 sq mi). It is declining due to egg collection, human disturbance and the loss of coastal wetlands in China. [84] Three other species are categorised as "endangered", with declining populations of less than 10,000 birds.
The name is derived from súla, the Old Norse and Icelandic word for the other member of the family Sulidae, the gannet. [ 5 ] The English name booby may derive from the Spanish slang term bobo , meaning "stupid", [ 6 ] as these tame birds had a habit of landing on board sailing ships, where they were easily captured and eaten.