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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.
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
Eastern bluebirds measure 16–21 cm (6.3–8.3 in) long, span 25–32 cm (9.8–12.6 in) across the wings, and weigh 27–34 g (0.95–1.20 oz). [12] [11] Male bluebirds have a bright head, back, and wings. Their breast is a brownish red. [12] Females are lighter with gray on the head and back and some blue on their wings and tail.
Check out the slideshow above to discover how researchers are studying the difference between male and female eating habits. More from Kitchen Daily: 10 most misleading health food claims
These birds hover over the ground and fly down to catch insects, also flying from a perch to catch them. The first technique takes up to 8 times the energy of sitting on a perch and waiting. They may forage in flocks in winter, looking for grasshoppers. Mountain Bluebirds will come to a platform feeder with live meal worms, berries, or peanuts.
The plumage of the fairy-bluebirds is exceptional, with the upperparts being deep rich blue. The Asian fairy-bluebird is sexually dimorphic in its plumage, the male being much brighter than the female, but the Philippine fairy-bluebird exhibits much less difference and the female is almost as bright as the male. The deep colour is provided by ...
Mae Suzuki was stuck in a cycle of restrictive dieting and bingeing for years. She applied the visualization technique, popularized by people like Steve Jobs, and lost 40 pounds.
An aerial insectivore, the tree swallow forages both alone and in groups, eating mostly insects, in addition to mollusks, spiders, and fruit. The nestlings, like the adult, primarily eat insects, fed to it by both sexes. This swallow is vulnerable to parasites, but, when on nestlings, these do little damage. The effect of disease can become ...