Some lay pale blue eggs and white eggs in North America including the Eastern, Mountain, and Western Bluebird. Routinely add ribbons, strips of cellophane, thin bark and leaves to their nest, which may cause some to confuse it with a House Sparrow nest. The Ash-throated flycatcher nest (right) is made up of grass, weeds, fur and hair.
I'm concerned these eggs may not hatch since it has been 21 days. This species measures 16–21 cm (6.3–8.3 in) long, spans 25–32 cm (9.8–12.6 in) across the wings, and weighs 27–34 g (0.95–1.20 oz). The female makes the nest by loosely weaving together grasses and pine needles, then lining it with fine grasses and occasionally horse hair …
In partly open terrain of the west, from valley farms and orchards to clearings in mountain pine forest, this bluebird is often common.
Western Bluebirds can … The chances of finding a Bluebird egg on the ground is rare though. The female builds the nest, with the male helping sometimes.
Sometimes containing some cow or horse dung.
The male Eastern Bluebird displays at his nest cavity to attract a female. There was an 80 percent increase in the female acceptance of within-pair mating ten days before egg-laying and continued throughout the laying period. The western bluebird (Sialia mexicana) is a small thrush, about 15 to 18 cm (5.9 to 7.1 in) in length.Adult males are 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. They are co-operative breeders, with helper birds helping the parents raise young. The American Kestrellays 4 to 5 smooth, non-glossy, cream colored eggs, about twice the size of a Western Bluebirdegg, with irregular brown spots. The Western Bluebird nest (left) is a collection of fine grasses and sometimes include a feather or two, leaves and thin bark. Western & Mountain Bluebirds. In open parklands of the American West, brilliant blue-and-rust Western Bluebirds sit on low perches and swoop lightly to the ground to catch insects. The study observed that male western bluebirds mate with the females regularly 60 days before laying eggs until the start of the incubation period. In late April - and often again in mid June - the female lays eggs. The mountain bluebird also inhabits much of western North America—often at elevations above 7,000 feet.
"Although Pennsylvania's bluebird population appears to be stronger today than any time over the past 50 years, the species surely needs to remain in the public's eye to ensure its well-being and that it continues to prosper," emphasized Gross. Deep blue, rusty, and white, males are considerably brighter than the gray-brown, blue-tinged females.
All Bluebirds lay blue eggs. Some of our readers have provided photos and information on these species for us to include on this website, and we wish to thank them for their contributions. Incubation lasts approximately 12-14 days for Eastern, 13-14 days for Mountain and 13-14 days or Western Bluebirds. It is the state bird of Missouri and New York.. The eggs are laid one each day until the entire clutch is complete, usually 4-6 powder blue or, occasionally, white eggs. Diet Bluebirds eat small fruits and hunt insects, spiders, and other creatures from above. Therefore, it’s unlikely the egg or eggshell will fall on the ground to be discovered.