INDIVIDUAL DISTANCE

[1] ARMSTRONG EA, 1947, BIRD DISPLAY BEHAVIO

[2] BURCKHARDT D, 1944, ORNITHOL BEOB, V5, P49

[3] Buxton E. J. M., 1939, British Birds, V33, P184

[4] THE BREEDING BIOLOGY AND BEHAVIOUR OF THE CONTINENTAL GOLDFINCH CARDUELIS-CARDUELIS-CARDUELIS [J]. IBIS, 1948, 90 (04) : 493 - 525

[5] DARLING EF, 1938, BIRD FLOCKS

[6] HUXLEY JS, 1925, IBIS, V1, P868

[7] HUXLEY JULIAN S., 1926, IBIS, V2, P1

[8] JENKINS DW, 1944, AUK, V61, P38

[9] KIRKMAN F. B., 1940, BRITISH BIRDS, V34, P100

[10] KIRKMAN FF, 1937, BIRD BEHAVIOUR

[1] ARMSTRONG EA, 1947, BIRD DISPLAY BEHAVIO

[2] BURCKHARDT D, 1944, ORNITHOL BEOB, V5, P49

[3] Buxton E. J. M., 1939, British Birds, V33, P184

[4] THE BREEDING BIOLOGY AND BEHAVIOUR OF THE CONTINENTAL GOLDFINCH CARDUELIS-CARDUELIS-CARDUELIS [J]. IBIS, 1948, 90 (04) : 493 - 525

[5] DARLING EF, 1938, BIRD FLOCKS

[6] HUXLEY JS, 1925, IBIS, V1, P868

[7] HUXLEY JULIAN S., 1926, IBIS, V2, P1

[8] JENKINS DW, 1944, AUK, V61, P38

[9] KIRKMAN F. B., 1940, BRITISH BIRDS, V34, P100

[10] KIRKMAN FF, 1937, BIRD BEHAVIOUR