Page 112
It is present from hatching (in precocial and semi-altricial species) or a little while
thereafter (in altricial species), up until ... from damage / injury and are then called
eyelashes – such as in ground-hornbills, the secretarybird and rock-jumpers.
Page 222
It may be essential to keep eggs of precocial species (having longer incubation
periods for advanced development) hydrated because ... Synchronous hatching
of precocial species is not as overwhelming for the parents as it is in altricial
species because the chicks are not as ... owls, egrets, many herons, and many
passerines including tchagras, thrushes, rollers and typical hornbills, among
many others.
Page 247
This is typical of precocial species where mobility is the key to early survival so
development of the legs is a priority. This is in sharp contrast to altricial species,
which have better developed wings at hatching. ... Not all birds will practise good
hygiene, however, with some like the kingfishers, bee-eaters, ground-hornbill (
although the female leaves the nest to do her ablutions), and virtually all
estrildids ...
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