[179]

Dresser, Birds of Europe, vii. 1871-81, pp. 388, 394.

[180]

W. K. Parker, Tr. Zool. Soc. London, vi. p. 501; x. p. 307; Murie, op. cit. vii. p. 465; A. D. Bartlett, P. Z. S. 1862, p. 218.

[181]

Layard, Ibis 1882, pp. 534-535; Bartlett, P.Z.S. 1862, pp. 218; 1868, pp. 114-116.

[182]

Dict. Birds, 1896, pp. 923-925.

[183]

P.Z.S. 1866, p. 76.