Bronn's Thier-Reich, Aves, Syst. Theil, 1893, pp. 212-223.
Cat. Birds Brit. Mus. xix. 1891, pp. 209-210.
For superstitions connected with Celebes Cuckoos, see Meyer, Ibis, 1879, pp. 67-70.
Cf. Sibree, Ibis, 1891, pp. 218-219.
Cf. Meyer, ut supra (p. 356).