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Most species weave nests that have narrow entrances, facing downward. Many weaver species are gregarious and breed colonially. [2] The birds build their nests together for protection, often several to a branch. Usually the male birds weave the nests and use them as a form of display to lure prospective females.
The young birds are able to fly and are totally independent. They must find food and defend themselves from predators such as monitor lizards , reticulated pythons , wild pigs , and cats. The maleo is monogamous and members of a pair stay close to each other all the time.
The birds are best known for building massive nest mounds of decaying vegetation, which the male attends, adding or removing litter to regulate the internal heat while the eggs develop. However, some bury their eggs in other ways; there are burrow-nesters which use geothermal heat, and others which simply rely on the heat of the sun warming the ...
The red-billed quelea (/ ˈ k w iː l i ə /; [3] Quelea quelea), also known as the red-billed weaver or red-billed dioch, is a small—approximately 12 cm (4.7 in) long and weighing 15–26 g (0.53–0.92 oz)—migratory, sparrow-like bird of the weaver family, Ploceidae, native to Sub-Saharan Africa.
Other birds often built their own nests on top of Weaver nest sites. [4] Some birds build nests in trees, some (such as eagles, vultures, and many seabirds) will build them on rocky ledges, and others nest on the ground or in burrows. [3] Each species has a characteristic nest style, but few are particular about where they build their nests.
Nests have been recorded from the eaves of buildings, on creepers on walls, in holes in earth banks, and in holes in haystacks. Sometimes the Cape sparrow nests in the disused nests of other birds, such as weavers and swallows. Pairs that nest away from colonies usually choose low bushes or utility poles as nesting sites. [20]
These nests have a unique chambered construction. [3] While many Furnariids have different nests, the hornero nest is the reason for the common name applied to the entire family; ovenbirds (they are unrelated to the parulid warbler called the ovenbird in the United States). The size and exact shape of the hornero nest varies depending on the ...
The bearded vulture (Gypaetus barbatus), also known as the lammergeier and ossifrage, is a very large bird of prey in the monotypic genus Gypaetus.The bearded vulture is the only known vertebrate whose diet consists of 70–90% bone.