L'evolution postembryonnaire du poids du pigeon domestique

Abstract

A detailed study of the postembryonic evolution of the weight of the pigeon, by means of daily weighing of the young birds, is given (table). The young bird grows very fast during the first days of its postembryonic life, the classical S shaped growth curve being steep in the beginning. Growth slows down during the period the feeding changes from “crop milk” to grains regurgitated from the crop of the parents, and also during the period that the young bird begins to come out of the nest and to feed on his own (Fig. 1).