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The entire time from egg-laying to fledging may be as little as 17 days. Yellow-billed cuckoos occasionally lay eggs in the nests of other birds (most often the closely related black-billed cuckoo), but they are not obligate brood parasites of other birds as is the common cuckoo of Eurasia.
The great reed warblers' responses to the common cuckoo eggs varied: 66% accepted the egg(s); 12% ejected them; 20% abandoned the nests entirely; 2% buried the eggs. 28% of the cuckoo eggs were described as "almost perfect" in their mimesis of the host eggs, and the warblers rejected "poorly mimetic" cuckoo eggs more often.
Yellow-billed and black-billed cuckoos occasionally lay eggs in the nests of other birds, but are not obligate brood parasites like the common cuckoo of Eurasia. Northern species such as yellow-billed and black-billed cuckoos are strong migrants , wintering in Central or South America , and occasionally wander to western Europe as rare vagrants ...
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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 ...
They tend to nest in trees and can lay up to 7 eggs (Coccyzus) although Saurothura only lays 2–3. Only one of the family, the Black-billed cuckoo Coccyzus erythropthalmus (Wilson), is known to be a brood parasite. Both the yellow-billed cuckoo and the black-billed cuckoo are vagrants to Europe. [3]
The female cuckoo in each case replaces one of the host's eggs with one of her own. The cuckoo egg hatches earlier than the host's, and the chick grows faster; in most cases the cuckoo chick evicts the eggs or young of the host species. Cuculus species lay coloured eggs to match those of their passerine hosts. Female cuckoos specialise in a ...
Like many other cuckoos, the African cuckoo is a brood parasite, the female laying her eggs in the nests of birds of other species, removing an egg already present in the nest. [3] Target hosts vary across the range, and the cuckoo's eggs usually closely match in colour and size the eggs of the host species; the yellow-billed shrike ...