Investigating Food Habits of Terrestrial Vertebrates - Research Techniques in Animal Ecology - page 190

Till, J. A. and F. F. Knowlton. 1983. Efficacy of denning in alleviating coyote depredations
upon domestic sheep. Journal of Wildlife Management 47: 1018-1025.
Topping, M. and H. Kruuk. 1996. Size selection of prey by otters, Lutra lutra L.: An exper-
imental approach. Zeitschrift für Saügetierkunde 61: 1-3.
Torell, D. T. 1954. An esophageal fistula for animal nutrition studies. Journal of Animal Sci-
ence 13: 878-882.
Vavra, M., and J. L. Holechek. 1980. Factors influencing microhistological analyses of her-
bivore diets. Journal of Range Management 33: 371-374.
Vavra, M., R. W. Rice, and R. M. Hansen. 1978. A comparison of esophageal fistula and
fecal material to determine steer diets. Journal of Range Management 31: 11-13.
Vogtman, D. B. 1945. Flushing tube for determining food of gamebirds. Journal of Wildlife
Management 9: 255-257.
Wallmo, O. C., R. B. Gill, L. H. Carpenter, and D. W. Reichert. 1973. Accuracy of field
estimates of deer food habits. Journal of Wildlife Management 37: 556-562.
Weaver, J. L. 1993. Refining the equation for interpreting prey occurrence in gray wolf scat.
Journal of Wildlife Management 57: 534-538.
Webb, J. 1943. Identification of rodents and rabbits by their fecal pellets. Transactions of the
Kansas Academy of Science 43: 479-481.
Westoby, M., G. R. Rost, and J. A. Weis. 1976. Problems with estimating herbivore diets
by microscopically identifying plant fragments from stomachs. Journal of Mammalogy
57: 167-172.
White, T. 1978. The importance of a relative shortage of food in animal ecology. Oecologia
33: 71-86.
Wiens, J. A. 1977. On competition and variable environments. American Scientist 65:
590-597.
Wiens, J. A. 1993. Fat times, lean times and competition among predators. Trends in Ecol-
ogy and Evolution 8: 348-349.
Windberg, L. A. and C. D. Mitchell. 1990. Winter diets of coyotes in relation to prey in
southern Texas. Journal of Mammalogy 71: 639-647.
Zalewski, A. 1996. Choice of age classes of bank voles Clethrionomys glareolus by pine
marten Martes martes and tawny owl Strix aluco in Bialowieza National Park. Acta
Oecologia 17: 233-244.