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The bluebirds are a North American [1] group of medium-sized, mostly insectivorous or omnivorous birds in the order of Passerines in the genus Sialia of the thrush family (Turdidae). Bluebirds are one of the few thrush genera in the Americas. Bluebirds lay an average of 4 to 6 eggs per clutch. They will usually brood two or three times in a year.
The eastern bluebird (Sialia sialis) is a small North American migratory thrush found in open woodlands, farmlands, and orchards. The bright-blue breeding plumage of the male, easily observed on a wire or open perch, makes this species a favorite of birders.
Some bluebirds will have eggs in early April and some in mid and late April. Some bluebirds won’t be returning to this area until later in April. As we have seen in the past, the early birds ...
Volunteers at Maybury State Park keep an eye on bluebird nesting boxes, watching for predators, counting eggs and fledglings.
They lay two to three eggs in a tree nest. The call of the Asian fairy-bluebird is a liquid two note Glue-It. As the names would suggest, the Asian fairy-bluebird (I. puella) occurs across southern Asia, the Philippine fairy-bluebird (I. cyanogastra) in that archipelago, and the Palawan fairy-bluebird (I. tweeddalii) [2] on the island of Palawan.
If the bluebird eggs have hatched, the ants will eventually attack the young. Once the adult bluebird senses that the ants are infesting the nest she will abandon the nest full of eggs and/or babies.
All bird eggs contain the following components: [1] The embryo is the immature developing chick; The amnion is a membrane that initially covers the embryo and eventually fills with amniotic fluid, provides the embryo with protection against shock from movement
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.