ADAPTIVE RADIATION AND FEEDING ECOLOGY OF SOME BRITISH FINCHES

[31] LEIGH HS, 1916, J BD AGRIC FISH S, V15, P55

[32] Marler P, 1956, BEHAV SUPPL, P1, DOI [10.2307/4510692, DOI 10.2307/4510692]

[33] MARSHALL AJ, 1961, BIOLOGY COMPARATI ED, V2, P373

[34] Mayr E., 1942, SYSTEMATICS ORIGIN S

[35] MERIKALLIO, 1950, 10 P INT ORN C UPPS, P484

[36] Miller A.H., 1941, CONDOR, V43, P72

[37] MOUNTFORT G, 1957, HAWFINCH

[38] NEWSTEAD R, 1908, J BD AGRIC FISH S, V9, P40

[39] Newton I., 1964, Bird Study, V11, P47

[40] NEWTON I, 1964, THESIS OXFORD U

[31] LEIGH HS, 1916, J BD AGRIC FISH S, V15, P55

[32] Marler P, 1956, BEHAV SUPPL, P1, DOI [10.2307/4510692, DOI 10.2307/4510692]

[33] MARSHALL AJ, 1961, BIOLOGY COMPARATI ED, V2, P373

[34] Mayr E., 1942, SYSTEMATICS ORIGIN S

[35] MERIKALLIO, 1950, 10 P INT ORN C UPPS, P484

[36] Miller A.H., 1941, CONDOR, V43, P72

[37] MOUNTFORT G, 1957, HAWFINCH

[38] NEWSTEAD R, 1908, J BD AGRIC FISH S, V9, P40

[39] Newton I., 1964, Bird Study, V11, P47

[40] NEWTON I, 1964, THESIS OXFORD U