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Hunting By Expectation Or Optimal Foraging: A Study Of Patch Use By Chickadees, John Krebs, John Ryan, Eric Charnov
Hunting By Expectation Or Optimal Foraging: A Study Of Patch Use By Chickadees, John Krebs, John Ryan, Eric Charnov
Biology Faculty & Staff Publications
When a predator exploits an environment in which food is patchily distributed, it has to continually make the decision of how long to stay in a patch. In this paper we examine this question using black-capped chickadees foraging in a large aviary for small pieces of mealworm hidden in artificial pine cones. The results of our experiments show the following: (a) when the birds encounter a long sequence of patches (groups of pine cones) each containing the same number of prey, they do not learn to expect a fixed number of prey per patch (Gibb's hypothesis of hunting by expectation); …
On Clutch Size And Fitness., Eric Charnov, John R. Krebs
On Clutch Size And Fitness., Eric Charnov, John R. Krebs
Biology Faculty & Staff Publications
No abstract provided.