In the Upupinae and Irrisorinae the oil-gland of the incubating female, and also of the young, produces a stinking secretion.
Cf. Milne-Edwards, Oiseaux fossiles de la France, ii. 1871, pp. 474-492; and for further details A. Newton, Dict. Birds, 1894, pp. 671-674.
Brisson, who divided the genus Strix, made the Tawny Owl its type; if this be accepted, Striginae must become Alucinae and Buboninae become Striginae.
Cat. Birds Brit. Mus. ii. 1875, p. vii.
Hume, ed. Oates, Nests and Eggs of Indian Birds, iii. 1890, p. 103.