[62]“American Ornithology.”
[63]Professor Newton’s Appendix to Baring Gould’s “Iceland,” p. 408.
[64]Gillet, “Ibis,” 1870, p. 306.
[65]Von Schrenck, “Reise in Amurland.”
[66]“A Spring and Summer in Lapland,” p. 281.
[67]Tudbury, “Mag. Nat. Hist.,” vol. v. p. 449.
[68]“Geology and Zoology of Abyssinia,” p. 347.
[69]“The Land of Israel,” p. 105.
[70]“History of British Birds,” vol. ii. p. 251 (3rd ed.)
[71]Journ. As. Soc. Beng. xxiv. p. 277.