altricial


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Related to altricial: precocial

altricial

needing care after birth or hatching, as in the case of birds which remain in the nest for a period after hatching.

altricial

said of birds which are hatched with their eyes closed.
References in periodicals archive ?
2000, Yom-Tov 2001); thus the low rate of IBP in altricial species may reflect researcher bias rather than an actual biological pattern.
Hummingbirds are unusual among species with altricial young because parental care is performed solely by the female.
Age-related differences affecting butyrylcholinesterase levels have been previously reported in sparrowhawks (Accipiter nisus), European kestrels (Falco tinnunculus), tawny owls (Strix aluco), (45) eastern bluebirds (Sialia sialis), and European starlings (Sturnus vulgaris),' with adults having higher levels than juveniles in altricial species.
Alternative life histories of the genus Lucania: 3: an ecomorphological explanation of altricial (L.
In colonial birds that nest in trees and have altricial chicks (i.
Altricial development in wood-feeding cockroaches: The key to antecedent of termite eusociality, pp.
The critical period for birds of this sort, the so-called altricial birds that spend some time in the nest, is to get them just before they are ready to leave the nest.
For-example, it is stated that the chicks of altricial birds are able to fly and feed themselves as soon as they leave the nest, which is by no mean universally the case.
FL Recent fledglings (of altricial species) or downy young (of precocial species such as galliformes, shorebirds or waterfowl) confirm breeding.
The most significant modification in humans compared to other extant primates is altricial birth, which is the birth of helpless newborns (as opposed to precocial birth in species like chimps and horses).
What, in the bird and animal worlds, are the meanings of the opposing terms altricial and precocial?