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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 mountain bluebird (Sialia currucoides) is a migratory small thrush that is found in mountainous districts of western North America. It has a light underbelly and black eyes. Adult males have thin bills and are bright turquoise-blue and somewhat lighter underneath.
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.
Volunteers at Maybury State Park keep an eye on bluebird nesting boxes, watching for predators, counting eggs and fledglings.
Typically, the bluebirds build their nest in early April and can lay their clutch of eggs any time after that — laying one egg a day — then starting to incubate them after the final egg is laid.
Another example is the blue wildebeest, the calves of which can stand within an average of six minutes from birth and walk within thirty minutes; [5] [6] they can outrun a hyena within a day. [ 7 ] [ 8 ] [ 9 ] Such behavior gives them an advantage over other herbivore species and they are 100 times more abundant in the Serengeti ecosystem than ...
Bluebirds have two or three nestings per year so do not give up trying to attract them. Keep monitoring your bluebird nest boxes and make sure that they aren’t occupied by house sparrows.
An adult Eurasian blue tit collecting the fecal sac of a chick (just hatched, still naked and blind) to ensure the cleanliness of their nest. A fecal sac (also spelled faecal sac ) is a mucous membrane, generally white or clear with a dark end, [ 1 ] that surrounds the feces of some species of nestling birds . [ 2 ]