[22] Willughby’s ‘Ornithology,’ edited by Ray.
[23] J. M. Eaton’s edition (1858) of Moore, p. 98.
[24] Pigeon pattu plongeur. ‘Les Pigeons,’ etc., p. 165.
[25] ‘Naturgeschichte Deutschlands,’ Band iv. s. 47.
[26] Mr. W. B. Tegetmeier, ‘Journal of Horticulture,’ Jan. 20, 1863, p. 58.
[27] ‘Coup-d’œil sur L’Ordre des Pigeons,’ par C. L. Bonaparte (‘Comptes Rendus’), 1854-55. Mr. Blyth, in ‘Annals of Nat. Hist.,’ vol. xix., 1847, p. 41, mentions, as a very singular fact, “that of the two species of Ectopistes, which are nearly allied to each other, one should have fourteen tail-feathers, while the other, the passenger pigeon of North America, should possess but the usual number—twelve.”
[28] Described and figured in the ‘Poultry Chronicle,’ vol. iii., 1855, p. 82.
[29] ‘The Pigeon Book,’ by Mr. B. P. Brent, 1859, p. 41.
[30] ‘Die staarhälsige Taube. Das Ganze, etc.,’ s. 21, tab. i. fig. 4.
[31] ‘A Treatise on the Almond-Tumbler,’ by J. M. Eaton, 1852, p. 8, et passim.