[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.