Seven to 15 days after the birds arrive, the males begin constructing nests on the ground, ledges or in a trees. The nest consists of twigs and grasses and can take up to two weeks to complete. After that, the female will lay and incubate two to four white eggs with faint brown marks for approximately 28 days.
Male Swainson's Hawks choose the nest site, usually near the top of a solitary tree or in a small grove of trees along a stream. Pairs often build nests in ...
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Nest site is usually in a tree or large shrub in open country, usually 15-30' above ground, but may be lower or higher; generally well hidden within foliage.
Habitat. Swainson's hawks prefer open grassland and desert areas. Nesting. Swainson's hawks are gentle monogamous birds; they live in harmony with other birds ...
The Swainson's hawk (Buteo Swainsoni) was listed as a threatened species in 1983 by the California Fish and Game Commission. This listing was based on loss ...