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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 ...
The beak allows the bird to reach deep into tree-holes to access food unavailable to other birds, and also to ransack suspended nests built by smaller birds. A toucan's tongue is long (up to 15 cm or 6 in), narrow, grey, and singularly frayed on each side, adding to its sensitivity as a tasting organ.
Nest trees are located either in large wetlands or in agricultural fields, with many species like the red-naped ibis breeding inside cities. [23] The Australian white ibis also breeds extensively inside cities and has greatly expanded its population. [24] The white-faced ibis sometimes nests on dry land and on low shrubs in marshes. [25]
Sociable weavers construct permanent nests on trees and other tall objects. These nests are amongst the largest built by any bird, and are large enough to house over 100 pairs of birds, [10] containing several generations at a time. The nests are highly structured and provide birds with a more advantageous temperature relative to the outside.
The nest is built by both sexes at the top of a dense thorny tree, often an Acacia, at a height of between 2.5 and 13 m (8 and 40 ft) above the ground. The nest is constructed as a relatively flat platform of sticks 1.0–1.5 m (3–5 ft) across with a depth 30–50 cm (12–20 in).
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.
All marbled murrelet nests found in Washington, Oregon, and California were located in old-growth trees that ranged from 38 inches (88 cm) d.b.h. to 210 inches (533 cm) d.b.h. with a mean of 80 inches (203 cm) d.b.h. Nests were located high above the ground and had good overhead protection but allowed easy access to the exterior forest. [13]
For Taxodium trees, it generally nests near the top branches, frequently between 18 and 24 metres (59 and 79 ft) above the ground. [26] On the tree itself, forks of large limbs or places where multiple branches cross are usually chosen. [29] The nest itself is built by the male [30] from sticks [31] and green twigs [32] collected from the ...