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Common cuckoo chicks fledge about 17–21 days after hatching, [2] compared to 12–13 days for Eurasian reed warblers. [38] If the hen cuckoo is out-of-phase with a clutch of Eurasian reed warbler eggs, she will eat them all so that the hosts are forced to start another brood.
Furthermore, the cuckoo's internal temperature is 3–4 °C higher than the temperature at which the egg is incubated in the nest, and the higher temperature means that the egg incubates faster, so at the time it is laid, the egg has already had the equivalent of 30 hours incubation in a nest.
The incubation period, the time from the start of uninterrupted incubation to the emergence of the young, varies from 11 days (some small passerines and the black-billed and yellow-billed cuckoos) to 85 days (the wandering albatross and the brown kiwi).
Coquerel's coua (Coua coquereli) is a species of cuckoo in the family Cuculidae. ... Clutch size averages 1.8 and the minimum incubation time is 13 days. The young ...
The cuckoo chick hatches within 12 days of incubation, 2 days before the host egg, ejecting other eggs in the nests within two days of hatching, leaving the cuckoo the sole chick. As newly hatched cuckoo chicks eject host eggs they do not get to learn the host's begging call, but can possess begging call polymorphism, where nestlings produce ...
The banded ground cuckoo ... The incubation period was at least 13 days and the time to fledging was 20 days. [6
The female cuckoo lays one, sometimes two, white or bluish eggs in the host's large stick nest. The eggs hatch in 15 days, with a further 18 days until the cuckoo fledges. The young spinetails disappear. This species is about 27 cm (11 in) long and weighs 40 g (1.4 oz). The adult is mainly grey-brown above, streaked with black and buff.
Incubation lasts between twelve and seventeen days, but usually twelve days, with the eggs hatching before those of the host. The cuckoo chick ejects from the nest any other eggs and nestlings it encounters. Its eyes open after eight days and it fledges in three weeks, remaining dependent on its foster parents for several more weeks.