Note 18 — Chapter VI · PIGEONS—continued.

With respect to feral pigeons—for Juan Fernandez, see Bertero in ‘Annal. des Sc. Nat.,’ tom. xxi. p. 351. For Norfolk Islands, see Rev. E. S. Dixon in the ‘Dovecote,’ 1851, p. 14, on the authority of Mr. Gould. For Ascension I rely on MS. information given me by Mr. Layard. For the banks of the Hudson, see Blyth in ‘Annals of Nat. Hist.,’ vol. xx., 1857, p. 511. For Scotland, see Macgillivray, ‘British Birds,’ vol. i. p. 275; also Thompson’s ‘Nat. Hist. of Ireland, Birds,’ vol. ii. p. 11. For ducks, see Rev. E. S. Dixon, ‘Ornamental Poultry,’ 1847, p. 122. For the feral hybrids of the common and musk-ducks, see Audubon’s ‘American Ornithology,’ and Selys-Longchamp’s ‘Hybrides dans la Famille des Anatides.’ For the goose, Isidore Geoffroy St.-Hilaire, ‘Hist. Nat. Gén.,’ tom. iii. p. 498. For guinea-fowls, see Gosse’s ‘Naturalist’s Sojourn in Jamaica,’ p. 124; and his ‘Birds of Jamaica,’ for fuller particulars. I saw the wild guinea-fowl in Ascension. For the peacock, see ‘A Week at Port Royal,’ by a competent authority, Mr. R. Hill, p. 42. For the turkey I rely on oral information; I ascertained that they were not Curassows. With respect to fowls I will give the references in the next chapter.