FLOCKING AND FEEDING IN THE GREAT TIT PARUS MAJOR–AN EXPERIMENTAL STUDY

Ibis - Tập 114 Số 4 - Trang 507-530 - 1972
John R. Krebs1, Michael H. MacRoberts2, J. M. Cullen3
1(Edward Grey Institute of Field Ornithology, Oxford.)
2Department of Zoology, Oxford
3Department of Experimental Psychology, South Parks Road, Oxford, OXI 3PS.

Tóm tắt

SummarySome aviary experiments designed to investigate the survival value of flocking in the Great Tit Parus major are described.An individual searching for a source of food is less likely to find it if he is on his own or in a pair than when in a flock of four. This is a result of local enhancement: with more pairs of eyes searching, some member of the flock is likely to come across the food sooner than would a lone bird, and once one finds the food, others in the flock more or less immediately assemble at the food source. Once the birds have found a source of food, dominance interactions play a role in determining which individuals obtain the most food.If one bird finds a single item of food, both it and the other members of the flock rapidly alter their searching behaviour, concentrating their attention in the general area and /or type of place where the food item was found.Even if a bird searches in a place and does not find food, the others in the group show some increase in searching effort in the same area or type of place. The extent to which they do this depends on whether they are used to finding food in clumps or dispersed.The relevance of these findings to birds in the wild is discussed. It seems likely that local enhancement does occur in natural flocks, and the flocking in Great Tits is of benefit to the participants because they increase their effectiveness in finding food. However, the question of the survival value of mixed‐species flocks of titmice remains unresolved.

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Tài liệu tham khảo

Alcock J., 1969, Observational learning in birds, Ardea, 111, 308

10.1016/S0003-3472(69)80007-2

10.2307/1364192

10.2307/1715

Blurton Jones N. G., 1968, Observations and experiments on causation of threat displays of the Great Tit (Parus major), Anim. Behav. Monographs, 1, 74

10.1139/f69-054

Breder C. M., 1967, On the survival value of fish schools, Zoologica, 52, 25

10.1093/icesjms/25.3.307

Brosset A., 1969, La vie sociale des oiseaux dans une forêt équatoriale du Gabon, Biol. Gabon., 5, 29

Buxton E. J. M., 1948, Tits and peanuts, Br. Birds, 61, 229

10.1016/0040-5809(71)90012-8

Crook J. H., 1965, The adaptive significance of avian social organisations, Symp. zool. Soc. Lond., 14, 181

Fisher J., 1949, The opening of milk bottles by birds, Br. Birds, 42, 347

Gibb J. A., 1954, Feeding ecology of tits, with notes on Treecreeper and Goldcrest, Br. Birds, 96, 513

Gobs‐Custard J. D.1970.Feeding dispersion in some overwintering wading birds. InJ. H.Crook(Ed.) “Social behaviour in birds and mammals” pp.3–35. London.

10.1016/0022-5193(71)90189-5

10.2307/1817

10.1016/0003-3472(65)90075-8

Hinde R. A., 1952, The behaviour of the Great Tit (Parus major) and some other related species, Behaviour, 1

Hinde R. A.1970.Animal behaviour. 2nd Edition. New York.

Hinde R. A., 1951, Further observations on the opening of milk bottles by birds, Br. Birds, 44, 393

Hobson E. S., 1968, Predatory behavior of some shore fishes in the gulf of California, Res. Rep. U.S. Fish Serv., 73, 1

Imms A. D.1947.Insect natural history. London.

10.1038/205443a0

Lack D.1968.Ecological adaptations for breeding in birds. London.

10.2307/1366418

10.2307/1929145

Morley A., 1942, Effects of baiting on the Marsh‐tit, Br. Birds, 35, 261

10.2307/1942443

10.1111/j.1469-7998.1971.tb02176.x

10.1163/156853971X00302

Newton I., 1967, The adaptive radiation and feeding ecology of some British finches, Br. Birds, 109, 33

10.2307/4081055

Rand A. L., 1954, Social feeding behavior of birds, Fieldiana Zool., 36, 1

Short L. L., 1961, Interspecies flocking of birds of montane forest of Oaxaca, Mexico, Wilson Bull., 73, 341

10.1080/00359197109519131

Slud P., 1960, The birds of finca “La Selva” Costa Rica: a tropical wet forest locality, Bull. Am. Mus. nat. Hist., 121, 53

10.2307/4083844

Southwood T. R. E.1966.Ecological methods. London.

Thorpe W. H.1963.Learning and instinct in animals. London.

10.1163/036551660X00053

10.1016/0003-3472(65)90083-7

10.1163/156853964X00201

Ward P., 1965, Feeding ecology of the Black‐faced Dioch Quelea quelea in Nigeria, Br. Birds, 107, 173

Zahavi A., 1971, The social behaviour of the White Wagtail Motacilla alba alba wintering in Israel, Br. Birds, 113, 203

Zahavi A., 1971, The function of pre‐roost gatherings and communal roosts, Br. Birds, 113, 106

Zajonc R. B.1969.Animal social psychology: a reader of experimental studies. New York.

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Ibis

Tập 114 Số 4

507-530

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