Precocial Birds definition of Precocial Birds in the Free Online Encyclopedia.

Precocial Birds

(also, nidifugous birds or praecoces), birds whose eyes and aural openings are already open at hatching or soon thereafter and whose down covering is well developed. Precocial birds are adapted to moving independently (walking or running), and thermoregulation is established early in them. Many can search for food indepenently. Precocial birds constitute one of the basic subdivisions of the bird family by virtue of their postembryonic development. The behavior of the young of precocial birds varies. In large-footed chickens, for example, the young can flutter about immediately and are completely independent of their parents at the time of hatching. The young of ducks and cranes feed independently but stay with their parents. In certain chickens, the young follow their parents, who show them food. Among the rails and sheldrakes the parents feed the young. An example of partially precocial birds is the gull. Young gulls appear with open eyes and are well feathered, but for a certain period of time they remain in the nest and the parents feed them.

G. P. DEMENT’EV

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No references found	Because visual experience has been demonstrated as a powerful prenatal lateralizing influence in other studies of precocial birds, we hypothesized that prenatal visual experience would also prove to be a significant influence on postnatal motor asymmetry in domestic chicks. The development of postnatal turning bias is influenced by prenatal ... by Casey, Michael B.; Karpinski, Stephanie / The Psychological Record Emus and other precocial birds have joints similar to those of Horner's dinosaurs, yet these birds can walk just after emerging from the egg. Did dinosaurs need mother love? by Science News	Precision precision adjustment precision agriculture precision approach radar precision attribute precision block precision bombing precision casting precision depth recorder precision fire precision graphic recorder precision grinding Precision Machine Tool Precision Mechanics and Computer Technology, Institute of precision net Precision of Chemical Analysis precision sweep Precision, Classes of precision-balanced hybrid circuit Precisionism precoat precoat filter precoating Precoce Précoce Precocial Birds precocious Precociousness precognition precollagenous fiber Precombustion Chamber Precombustion Engine precompact set precompile precompiled header precompiled module precompiler precompressed zone precomputation precomputed altitude precomputed curve preconduction current preconfigured preconsolidation preconsolidation pressure precooler Precordillera precure precure finish precursor precut building	Preco de equilibrio Preço de Exercício Preco de exercico Preco de fechamento Preco de intervencao Preço de Mercado Preco de oferta Preco de subscricao Preco de tabela Preco de transferencia Preco de venda Preco de venda para entrega imediata Preco detonador Preco justificado Preco negociado Preco objetivado precoat precoat filter Precoated with a Neurite-Promoting Factor precoating precoating Precoce Precoce Précoce Précoce Precoces Precoces precocial precocial precocial Precocial Birds precocious precocious precocious precocious carrier precocious dentition precocious dentition precocious dentition precocious pseudopuberty precocious puberty precocious puberty precocious puberty precocious puberty precociously precociously precociously precociousness precociousness precociousness precocity precocity precocity PRECODD Precoding Matrix Indicator Precoetanean Precog Precog Precog Precog Precogitate Precogitation

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Because visual experience has been demonstrated as a powerful prenatal lateralizing influence in other studies of precocial birds, we hypothesized that prenatal visual experience would also prove to be a significant influence on postnatal motor asymmetry in domestic chicks.