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The Eurasian sparrowhawk is found throughout the temperate and subtropical parts of the Old World; whilst birds from the northern parts of the range migrate south for winter, their southern counterparts remain resident or make dispersive movements. Eurasian sparrowhawks breed in suitable woodland of any type, with the nest, measuring up to 60 ...
The California quail is the official state bird of California. This list of birds of California is a comprehensive listing of all the bird species seen naturally in the U.S. state of California as determined by the California Bird Records Committee (CBRC). [1] Additional accidental and hypothetical species have been added from different sources.
An audio recording of a house sparrow. The house sparrow (Passer domesticus) is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of 16 cm (6.3 in) and a mass of 24–39.5 g (0.85–1.39 oz).
Kestrels occasionally nest in holes created by large woodpeckers, [50] or use the abandoned nests of other birds, such as red-tailed hawks, merlins, and crows. [51] They have been recorded nesting on cliff ledges and building tops, as well as in abandoned cavities in cactuses. [52] [40] American kestrels also commonly utilize nesting boxes. [53]
List of birds of Santa Cruz County, California. The county is in Northern California, located on the California coast, including northern Monterey Bay, and west of the San Francisco Bay and Silicon Valley. It includes the southwestern Santa Cruz Mountains. [1] [2]
The golden-crowned sparrow spends its winters in flocks with conspecifics, but also often with other sparrow species, especially white-crowned sparrows. Flock territories typically range in size from 15–20 acres (6.1–8.1 ha). Individual birds remain with the same flock for the entire winter and return to the same wintering site each year. [15]
Once a sparrow chooses a nesting site, it tends to return to the site for many years. [11] It lays between two and five eggs at a time and typically only raises one brood a year, though some birds in California have been observed raising two or even three broods a year. [11] [12] In case of a nesting failure, replacement clutches may be laid. [11]
In winter, they often forage in flocks. [3] White-crowned sparrows nest either low in bushes or on the ground under shrubs and lay three to five brown-marked gray or greenish-blue eggs. [3] The white-crowned sparrow is known for its unihemispheric slow-wave sleep, which allows it to stay half-awake for up to two weeks during migration. [10]