[63] E. Selous, Bird Watching, pp. 15-20; Havelock Ellis, Psychology of Sex, Vol. III. p. 25.
[64] The jay is the only bird I know whose habits in this respect are different. Noisy and active during the winter the male becomes exceedingly quiet with the approach of the pairing season. This may possibly be explained by the fact that the two sexes of these beautiful birds are practically alike; thus there may be less temptation for the male to show off as the handsomer bird.
[65] J. Lewis Bonhote, The Birds of Britain, p. 272. It is from this work I have taken many facts relating to birds. See also A.R. Wallace, Darwinism, p. 287.
[66] Wallace states that these love-movements are more commonly performed by birds with dull plumage who have no special beauties to display to their mates, but the custom, as we have seen, is by no means confined to such birds.
[67] Notes of a Naturalist on the "Challenger," quoted by Wallace, Darwinism, p. 287.
[68] "The Ostrich," Zoölogist, March 1897; quoted by Havelock Ellis, Psychology of Sex, Vol. III. p. 34.
[69] Audubon, Scènes de la Nature, Vol. I. p. 317.
[70] J. Lewis Bonhote, The Birds of Britain, p. 39.
[71] Audubon, Scènes de la Nature, Vol. I. p. 383.
[72] Epinas, Sociétés Animales, p. 299.