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Adult female in Livermore, California. The western bluebird is a small stocky bird with a length of 15 to 18 cm (5.9 to 7.1 in). The adult male is bright blue on top and on the throat with an orange breast and sides, a brownish patch on back, and a gray belly and undertail coverts.
The California scrub jay is a medium-sized bird, approximately 27–31 cm (11–12 in) in length (including its tail), with a 39 cm (15 in) wingspan, and about 80 g (2.8 oz) in weight. In general, this species has a blue head, wings, and tail; a gray-brown back; grayish underparts; and white eyebrows. The throat is whitish with a blue necklace.
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.
However, blue jays have also been known to attack or kill other smaller birds, and foliage-roosting bat species such as Eastern red bats. [33] Jays are very territorial birds, and they will chase others from a feeder for an easier meal. Additionally, the blue jay may raid other birds' nests, stealing eggs, chicks, and nests.
Predators of young bluebirds in the nests can include snakes, cats, and raccoons. Bird species competing with bluebirds for nesting locations include the common starling, American crow, and house sparrow, which take over the nesting sites of bluebirds, killing young, smashing eggs, and probably killing adult bluebirds. [6] Male western bluebird
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Its density is lower in the central Rocky Mountain region (Montana, Idaho, Wyoming and eastern Utah) plus the desert or scrubland areas of the Great Basin (e.g. Nevada, western Utah, southern Arizona and parts of California). Some hybridization with the blue jay in eastern foothills of the Rocky Mountains, especially Colorado, has been reported ...
The increase in infected cows on California farms has significantly altered the number of herds nationally with the virus. Nearly 300 herds across 14 states have confirmed bird flu cases. Workers ...