[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. [90] D. Barrington, ‘Phil. Transact.’ 1773, p. 262. Bechstein, ‘Stubenvögel,’ 1840, s. 4. [91] This is likewise the case with the water-ouzel, see Mr. Hepburn in the ‘Zoologist,’ 1845-1846, p. 1068. [92] L. Lloyd, ‘Game Birds of Sweden,’ 1867, p. 25. [93] Barrington, ibid. p. 264. Bechstein, ibid. s. 5. [94] Dureau de la Malle gives a curious instance (‘Annales des Sc. Nat.’ 3rd series, Zoolog. tom. x. p. 118) of some wild blackbirds in his garden in Paris which naturally learnt from a caged bird a republican air. [95] Bishop, in ‘Todd’s Cyclop. of Anat. and Phys.’ vol. iv. p. 1496. [96] As stated by Barrington in ‘Philosoph. Transact.’ 1773, p. 262. [97] Gould, ‘Handbook to the Birds of Australia,’ vol. i. 1865, p. 308-310. See also Mr. T. W. Wood in the ‘Student,’ April, 1870, p. 125. [98] See remarks to this effect in Gould’s ‘Introduction to the Trochilidæ,’ 1861, p. 22. [99] ‘The Sportsman and Naturalist in Canada,’ by Major W. Ross King, 1866, p. 144-146. Mr. T. W. Wood gives in the ‘Student’ (April, 1870, p. 116) an excellent account of the attitude and habits of this bird during its courtship. He states that the ear-tufts or neck-plumes are erected, so that they meet over the crown of the head. [100] Richardson, ‘Fauna Bor. Americana: Birds,’ 1831, p. 359. Audubon, ibid. vol. iv. p. 507. [101] The following papers have been lately written on this subject:—Prof. A. Newton, in the ‘Ibis,’ 1862, p. 107; Dr. Cullen, ibid. 1865, p. 145; Mr. Flower, in ‘Proc. Zool. Soc.’ 1865, p. 747; and Dr. Murie, in ‘Proc. Zool. Soc.’ 1868, p. 471. In this latter paper an excellent figure is given of the male Australian Bustard in full display with the sack distended. [102] Bates, ‘The Naturalist on the Amazons,’ 1863, vol. ii. p. 284; Wallace, in ‘Proc. Zool. Soc.’ 1850, p. 206. A new species, with a still larger neck-appendage (_C. penduliger_), has lately been discovered, see ‘Ibis,’ vol. i. p. 457. [103] Bishop, in Todd’s ‘Cyclop. of Anat. and Phys.’ vol. iv. p. 1499.