Referencias:

• Baum, W.M., Random and systematic foraging (1987) Experimental Studies of Depletion and Schedules Or, 39, pp. 587-607. , Foraging Behaviour (Ed by A C Kamil J R Krebs & H R Pulliam)New York: Plenum Press
• Bell, W.J., (1991) Searching Behaviour: The Behavioural Ecology of Finding Resources, , Cambridge: Chapman & Hall
• Cassini, M.H., Kacelnik, A., Segura, E.T., The tale of the screaming hairy armadillo, the guinea pig and the marginal value theorem (1990) Anim. Behav., 39, pp. 1030-1050
• Charnov, E.L., Optimal foraging: The marginal value theorem (1976) Timor. Poput. Biol., 9, pp. 129-136
• Gill, F.B., Wolf, L.L., Economics of feeding territoriality in the golden-winged sunbird (1975) Ecology, 56, pp. 333-345
• Greegor, D.H., Jr., Ecology of the little hairy armadillo Chaetophractus vellerosus (1985) The Evolution and Ecology of Armadillos, Sloths and Vermilinguas, pp. 397-405. , G Montgomery, Washington, DC: Smithsonian Institute Press
• Kamil, A.C., Systematic foraging by a nectar-feeding bird, the Amakihi (Loxops virens) (1978) J. Comp, Physiol. Psychol., 92, pp. 388-396
• Mellgren, R.L., Roper, T.J., Spatial learning and discrimination of food patches in the European badger (Meles meles L) (1986) Anim. Behav., 34, pp. 1129-1134
• Pierce, G.J., Search paths of foraging common shrews Sorex araneus (1987) Anim. Behav, 35, pp. 1215-1224
• Pyke, G.K., Optimal foraging: Movement patterns of bumblebees between inflorescences (1978) Theor. Popul. Biol., 13, pp. 72-98
• Pyke, G.K., Optimal foraging in bumblebees: Rule of movement between flowers within inflorescences (1979) Anim. Behav., 21, pp. 1167-1181
• Smith, J.N.M., The food searching behaviour of two European thrushes: II. The adaptiveness of the search patterns (1974) Behaviour, 49, pp. 1-61
• Stephens, D.W., Krebs, J.R., (1986) Foraging Theory, , Princeton, New Jersey: Princeton University Press
• Tinbergen, N., Impekoven, M., Franck, D., An experiment on spacing out as a defence against predation (1967) Behaviour, 28, pp. 307-321
• Waddington, K.D., Heinrich, B., The foraging movements of bumblebees on vertical ‘inflorescences’: An experimental analysis (1979) J. Comp. Physiol., 134, pp. 113-117

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