[80] Brehm, ‘Thierleben,’ &c., B. iv. 1867, p. 990. Audubon, ‘Ornith. Biography,’ vol. ii. p. 492.
[81] ‘Land and Water,’ July 25th, 1868, p. 14.
[82] Audubon’s ‘Ornitholog. Biography;’ on Tetrao cupido, vol. ii. p. 492; on the Sturnus, vol. ii. p. 219.
[83] ‘Ornithological Biograph.’ vol. v. p. 601.
[84] The Hon. Daines Barrington, ‘Philosoph. Transact.’ 1773, p. 252.
[85] ‘Ornithological Dictionary,’ 1833, p. 475.
[86] ‘Naturgeschichte der Stubenvögel,’ 1840, s. 4. Mr. Harrison Weir likewise writes to me:—“I am informed that the best singing males generally get a mate first when they are bred in the same room.”
[87] ‘Philosophical Transactions,’ 1773, p. 263. White’s ‘Natural History of Selborne,’ vol. i. 1825, p. 246.
[88] ‘Naturges. der Stubenvögel,’ 1840, s. 252.
[89] Mr. Bold, ‘Zoologist,’ 1843-44, p. 659.