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altricial

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altricial

Animals born in a very dependent state and in need of a high degree of parental care. Examples include those mammals that are born naked and blind, such as mice and most other rodents, and most baby birds.



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Humans are highly altricial, with singleton births being the norm.
The woman as final arbiter: a case for the facultative character of ... by Mackey, W.C. / The Journal of Sex Research
In all altricial birds, hatchlings come out with poorly formed pelvic bones that are still composed largely of cartilage.
Did dinosaurs need mother love? by Science News
The latter point is particularly important: the rat and mouse are altricial species, so brain development at birth corresponds to fetal stages of human development (Rodier 1988), and thus the concentrations or temporal factors for nicotine or ETS may not reflect those experienced in typical human exposure scenarios.
Perinatal environmental tobacco smoke exposure in rhesus monkeys: ... by Seidler, Frederic J. / Environmental Health Perspectives
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