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Topic: Altricial


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  SingaporeMoms - Parenting Encyclopedia - Altricial   (Site not responding. Last check: 2007-10-30)
In bird and mammal biology, altricial species are those whose newly hatched or born young are relatively immobile, have closed eyes, lack hair or down, and must be cared for by the adults.
Altricial young are born helpless and require care for a comparatively long time.
There are eight recognized rankings of development precocity as discussed in Precocial and Altricial Young.
www.singaporemoms.com /parenting/Altricial   (72 words)

  
 Bird - Facts, Information, and Encyclopedia Reference article
After the eggs hatch, parent birds provide varying degrees of care in terms of food and protection.
Precocial birds can care for themselves independently within minutes of hatching; altricial hatchlings are helpless, blind, and naked, and require extended parental care.
The chicks of many ground-nesting birds such as partridges and waders are often able to run virtually immediately after hatching; such birds are referred to as nidifugous.
www.startsurfing.com /encyclopedia/b/i/r/Bird.html   (2630 words)

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