The sex ratio in wild birds

[51] STRESEMANN E, 1928, AVES KUKENTHAL HDB Z, V2, P378

[52] STRESEMANN E, 1928, AVES KUKENTHAL HDB Z, V2, P315

[53] TINBERGEN N, 1935, ARDEA, V24, P28

[54] VAUGHAN JH, 1930, J ORNITHOL, V85, P44

[55] VONLUCANUS F, 1917, J ORNITHOL, V65, P166

[56] VONTREUENFELS H, 1937, J ORNITHOL, V85, P607

[57] WETMORE A, 1926, MIGRATION BIRDS, P167

[58] WOOD M, 1938, AUK, V55, P124

[59] ZIMMERMANN R, 1929, J ORNITH S, V2, P263

[51] STRESEMANN E, 1928, AVES KUKENTHAL HDB Z, V2, P378

[52] STRESEMANN E, 1928, AVES KUKENTHAL HDB Z, V2, P315

[53] TINBERGEN N, 1935, ARDEA, V24, P28

[54] VAUGHAN JH, 1930, J ORNITHOL, V85, P44

[55] VONLUCANUS F, 1917, J ORNITHOL, V65, P166

[56] VONTREUENFELS H, 1937, J ORNITHOL, V85, P607

[57] WETMORE A, 1926, MIGRATION BIRDS, P167

[58] WOOD M, 1938, AUK, V55, P124

[59] ZIMMERMANN R, 1929, J ORNITH S, V2, P263