THE FOOD AND FEEDING-BEHAVIOR OF THE JACKDAW, ROOK AND CARRION CROW

[1] Campbell J. W., 1936, British Birds, V30, P209

[2] FISHER J, 1948, GRICULTURE LOND, V55, P20

[3] THE ASSESSMENT OF THE FOOD OF BIRDS [J]. IBIS, 1948, 90 (03) : 361 - 381

[4] Kluijver H. N., 1945, Limosa, V18, P1

[5] Lockie J. D., 1955, Ibis, V97, P341, DOI 10.1111/j.1474-919X.1955.tb01919.x

[6] Lorenz K. Z., 1949, ORNITHOLOGIE BIOL WI, P153

[7] NEWSTEAD R, 1908, J BD AGR S, V15, P53

[8] Podmore R. E., 1948, British Birds, V41, P272

[9] VANKOERSVELD E, 1951, 10 P INT ORN C, P592

[1] Campbell J. W., 1936, British Birds, V30, P209

[2] FISHER J, 1948, GRICULTURE LOND, V55, P20

[3] THE ASSESSMENT OF THE FOOD OF BIRDS [J]. IBIS, 1948, 90 (03) : 361 - 381

[4] Kluijver H. N., 1945, Limosa, V18, P1

[5] Lockie J. D., 1955, Ibis, V97, P341, DOI 10.1111/j.1474-919X.1955.tb01919.x

[6] Lorenz K. Z., 1949, ORNITHOLOGIE BIOL WI, P153

[7] NEWSTEAD R, 1908, J BD AGR S, V15, P53

[8] Podmore R. E., 1948, British Birds, V41, P272

[9] VANKOERSVELD E, 1951, 10 P INT ORN C, P592