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Among passerine birds, masked shrikes have been recorded stealing food from wheatears, [25] and Eurasian blackbirds have been recorded stealing smashed snails from other thrushes. [22] During seabird nesting seasons, frigatebirds soar above seabird colonies, waiting for parent birds to return to their nests with food for their young
The goldeneye often lays its eggs in the nests of other females, one of 74 species of Anseriformes to do so. [25] In many socially monogamous bird species, there are extra-pair matings resulting in males outside the pair bond siring offspring and used by males to escape from the parental investment in raising their offspring. [26]
It is a much larger bird than its hosts, and needs to monopolize the food supplied by the parents. The chick will roll the other eggs out of the nest by pushing them with its back over the edge. If the host's eggs hatch before the cuckoo's, the cuckoo chick will push the other chicks out of the nest in a similar way.
Interspecific brood parasitism evolved twice independently in the order Passeriformes, in the cowbirds (genus Molothrus) and in the family Viduidae. [1] Instead of making nests of their own, and feeding their young, brood parasites deposit their eggs in the nests of other birds.
Additionally, the blue jay may raid other birds' nests, stealing eggs, chicks, and nests. However, this may not be as common as is typically thought, as only 1% of food matter in one study was bird material. [25] Despite this, other passerines may still mob jays who come within their breeding territories. Blue jay in flight
The chestnut-breasted malkoha is typical of the Phaenicophaeinae in having brightly coloured skin around the eye.. Cuckoos are medium-sized birds that range in size from the little bronze cuckoo, at 17 g (0.6 oz) and 15 cm (6 in), to moderately large birds, ranging from 60–80 cm (24–31 in) in length, such as the giant coua of Madagascar, the coral-billed ground-cuckoo of Indochina, and ...
Both sexes build a large domed nest that has a side entrance. [28] It is chiefly composed of grasses and small twigs but can also incorporate lichen, string, and plastic. [29] [30] The birds will steal material from other nests. [28] The nest is placed in a wide range of sites, often in an exposed position high up in a tree or on man-made ...
The birds in this genus are infamous for laying their eggs in other birds' nests. The female cowbird notes when a potential host bird lays its eggs, and when the nest is left momentarily unattended, the cowbird lays its own egg in it. The female cowbird may continue to observe this nest after laying eggs.