[147] Couch, Illustrations of Instinct, p. 165.
[148] Gleanings, vol. i., pp. 112-13.
[149] Couch, Illustrations of Instinct, p. 232.
[150] See especially Bingley, Animal Biography, vol. ii., pp. 327-29.
[151] Gleanings, pp. 58-9.
[152] Smiles, Life of Edward, p. 240.
[153] History of Mexico, p. 220.
[154] Zoologist, vol. ii.
[155] Watson, Reasoning Power of Animals, pp. 375-76, where see also some curious cases of male storks slaying their females upon the latter hatching out eggs of other birds. He gives an exactly similar case as having occurred with the domestic cock; and in Bingley (loc. cit., vol. ii., p. 241) there is quoted from Dr. Percival another case of the same kind, in which a cock killed his hen as soon as she had hatched out a brood of young partridges from eggs which had been set to her.
[156] See Darwin. Descent of Man, pp. 92, 381, 406, 413.