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From 1981 to 1982, three independent swallow pairs were observed co-occupying the nest boxes of western bluebirds. These violet-green swallows protected the nesting site, removed fecal sacs from the boxes and fed the bluebird fledglings with no resistance from the adult western bluebirds.
It will sometimes attempt to take over the nest of other birds that breed in holes or enclosed spaces, such as the barn swallow, house martin, sand martin or European bee-eater. [34] Pairs may breed in isolation or loose colonies, [35] and will readily use nest boxes. In a Spanish study, boxes made from a mixture of wood and concrete (woodcrete ...
For a lone potoo, or a brooding adult with a potential predator close to the nest, the bird attempts to avoid detection by remaining motionless and relying on camouflage. If ineffective, the potoo breaks cover and attempts to intimidate the predator by opening its beak and eyes wide open while vocalizing or simply flies out of reach.
The slow-motion footage in “Every Little Thing” of hummingbirds captured in flight, or beak deep in a flowering bud or hovering at 50 beats per second are awe-nudging. Director Sally Aitken ...
Delichon urbicum. The western house martin (Delichon urbicum), sometimes called the common house martin, northern house martin or, particularly in Europe, just house martin, is a migratory passerine bird of the swallow family which breeds in Europe, north Africa and across the Palearctic; and winters in sub-Saharan Africa and tropical Asia.
Breeding has been recorded as typically February to August, but depending on the portion of this bird's range breeding birds can be met with almost year-round. [11] The nest is a slight depression on a thick tree branch, [ 12 ] at least 10 m (33 ft) above ground, with a single white (slightly spotted) egg measuring about 5.2 cm × 3.8 cm (2.0 ...
Bird flight is the primary mode of locomotion used by most bird species in which birds take off and fly. Flight assists birds with feeding, breeding , avoiding predators , and migrating . Bird flight includes multiple types of motion, including hovering, taking off, and landing, involving many complex movements.
The tree martin (Petrochelidon nigricans) is a member of the swallow family of passerine birds. It breeds in Australia , mostly south of latitude 20°S and on Timor island. It is migratory , wintering through most of Australia, New Guinea , Indonesia east of the Wallace Line and the Solomon Islands .