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The white-winged dove of southwestern North America was known to nest in large colonies when foraging areas could support such numbers. In 1978, in Tamaulipas , Mexico, researchers counted 22 breeding colonies of white-winged doves with a collective population size of more than eight million birds.
The site of nesting is usually in a shallow water marsh. Both males and females help to build a floating platform nest of vegetation (Kaufman 1996). Because of the colonial nature of these birds nests must be continually guarded during the breeding season. If left unattended other pairs of birds seeking nest sites will seize the platform. [6]
The common ground dove is North America's smallest and one of the world's smallest by mass. This species ranges from 15–18 cm (5.9–7.1 in) in length, spans 27 cm (11 in) across the wings, and weighs 26–40 g (0.92–1.41 oz). [8] The common ground dove has a yellow beak with a black tip. Feathers surrounding the beak are pink in colour.
The nest itself is constructed by the female [6] in about four days. [8] It consists of a loose platform of grass and rootlets and open inner cup of plant fiber and animal hair. [7] The chipping sparrow lays a clutch of two to seven pale blue to white eggs with black, brown, or purple markings.
Audubon's illustration of nesting house wrens. The nesting habits do not seem to differ significantly between the northern and southern house wrens. They usually construct a large cup nest in various sorts of cavities, taking about a week to build. The nest is made from small dry sticks and is usually lined with a variety of different materials.
She does most of the incubation, which lasts about 16 days. The young leave the nest about 22 days after hatching. This species is highly gregarious. A nesting pair may have other birds as helpers. Outside the breeding season, this bird wanders in noisy flocks. It also roosts communally; over 100 birds have been seen huddled in a single tree ...
Cyanocitta is a genus of birds in the family Corvidae, a family which contains the crows, jays and magpies. The genus includes two crested jays with blue plumage and a distinctive feather crest. Found only in temperate North America, the Rocky Mountains divide the two species.
The American coot's breeding habitat extends from marshes in southern Quebec to the Pacific coast of North America and as far south as northern South America. Birds from temperate North America east of the Rocky Mountains migrate to the southern United States and southern British Columbia. It is often a year-round resident where water remains ...
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