• Altrices – Nursers, — a term applied to those birds whose young are hatched in a very immature and helpless condition, so as to require the care of their parents for some time; — opposed to praecoces.
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• Altrices – Nursers, — a term applied to those birds whose young are hatched in a very immature and helpless condition, so as to require the care of their parents for some time; — opposed to praecoces.