
THE DIET OF THE CHOUGH (PYRRHOCORAX... THE ALPINE CHOUGH (PYRRHOCORAX GRACULUS) ...
... greater trophic ftexibility of the Alpine Chough appears to result from its opportunistic behaviour which allows this species to exploit the resource that is more profitable in each month. Overall niche breadth values were virtually identical, with the two species feeding upon approximately the sam ...
... greater trophic ftexibility of the Alpine Chough appears to result from its opportunistic behaviour which allows this species to exploit the resource that is more profitable in each month. Overall niche breadth values were virtually identical, with the two species feeding upon approximately the sam ...
Scientific Articles - Practical Farmers of Iowa
... Illius, A.W., I.J. Gordon, D.A. Elston and J.D. Milne. 1999. Diet selection in goats: a test of intake-rate maximization. Ecology 80:1008-1018. Kennedy, M. and R.D. Gray. 1993. Can ecological theory predict the distribution of foraging animals? A critical analysis of experiments on the Ideal Free Di ...
... Illius, A.W., I.J. Gordon, D.A. Elston and J.D. Milne. 1999. Diet selection in goats: a test of intake-rate maximization. Ecology 80:1008-1018. Kennedy, M. and R.D. Gray. 1993. Can ecological theory predict the distribution of foraging animals? A critical analysis of experiments on the Ideal Free Di ...
PDF - Projects at Harvard
... choice preferences in different types of discounting tasks: temporal and spatial. In previous research on temporal discounting, we offered cotton-top tamarins and common marmosets choices between a small food reward available immediately and a larger reward available after a time delay [5]. Results ...
... choice preferences in different types of discounting tasks: temporal and spatial. In previous research on temporal discounting, we offered cotton-top tamarins and common marmosets choices between a small food reward available immediately and a larger reward available after a time delay [5]. Results ...
Belovsky, G.E. 1997.
... other activities such as mating, hiding from predators, care of young, and so on. In earlier papers (Belovsky, 1986a; Belovsky and Slade, 1986), I framed the above constraint equations in terms of allometric relationships and biomasses of two plant types found in grasslands: grasses and forbs. I emp ...
... other activities such as mating, hiding from predators, care of young, and so on. In earlier papers (Belovsky, 1986a; Belovsky and Slade, 1986), I framed the above constraint equations in terms of allometric relationships and biomasses of two plant types found in grasslands: grasses and forbs. I emp ...
Why Be Diurnal? Or, Why Not Be Cathemeral?
... [Engqvist and Richard, 1991] or exploit temporally limited resources [Sussman and Tattersall, 1976]. In general, there has been little support for a foraging advantage to cathemerality [Colquhoun, 1998; Curtis et al., 1999] and Kappeler and Erkert [2003] concluded that improved food availability is ...
... [Engqvist and Richard, 1991] or exploit temporally limited resources [Sussman and Tattersall, 1976]. In general, there has been little support for a foraging advantage to cathemerality [Colquhoun, 1998; Curtis et al., 1999] and Kappeler and Erkert [2003] concluded that improved food availability is ...
Group Size and Foraging Efficiency in Yellow Baboons
... depending upon the amount of information available (e.g., unidentifiedgrass corm, unidentifiedplant, unidentified food, etc.); this created 8 additional categories, for a total of 64 differentpossible feeding activities. Specific compositional data from proximate analyses were availablefor 39 of the ...
... depending upon the amount of information available (e.g., unidentifiedgrass corm, unidentifiedplant, unidentified food, etc.); this created 8 additional categories, for a total of 64 differentpossible feeding activities. Specific compositional data from proximate analyses were availablefor 39 of the ...
Optimal nutrient foraging strategy of an omnivore Liebig`s law
... observed. Based on the biological situation, the explaining theoretical model must take into account the stoichiometry of different nutrients and the optimal foraging of the omnivore agent. We introduce an optimal numerical response which depends on the optimal functional responses and on the ‘mixed ...
... observed. Based on the biological situation, the explaining theoretical model must take into account the stoichiometry of different nutrients and the optimal foraging of the omnivore agent. We introduce an optimal numerical response which depends on the optimal functional responses and on the ‘mixed ...
Foraging Decisions Among Ach Hunter
... efficient. These predictions are compared with behavioral data in an attempt to falsify the models or the assumptions built into them. Although it is impossible to demonstrate that any organism is not foraging optimally, because many assumptions are built into OFT models, specific models can be fals ...
... efficient. These predictions are compared with behavioral data in an attempt to falsify the models or the assumptions built into them. Although it is impossible to demonstrate that any organism is not foraging optimally, because many assumptions are built into OFT models, specific models can be fals ...
Mathematical Modeling of Ant Pheromones
... food randomly appearing, it could be advantageous for the trails to evaporate and the so the colony could find the new food sources. With a fixed probability of food appearing, it is proposed that there is an optimum rate at which the pheromone should evaporate allowing the colony to bring the most ...
... food randomly appearing, it could be advantageous for the trails to evaporate and the so the colony could find the new food sources. With a fixed probability of food appearing, it is proposed that there is an optimum rate at which the pheromone should evaporate allowing the colony to bring the most ...
Foraging

Foraging is searching for wild food resources. It affects an animal's fitness because it plays an important role in an animal's ability to survive and reproduce. Foraging theory is a branch of behavioral ecology that studies the foraging behavior of animals in response to the environment where the animal lives.Behavioral ecologists use economic models to understand foraging; many of these models are a type of optimality model. Thus foraging theory is discussed in terms of optimizing a payoff from a foraging decision. The payoff for many of these models is the amount of energy an animal receives per unit time, more specifically, the highest ratio of energetic gain to cost while foraging. Foraging theory predicts that the decisions that maximize energy per unit time and thus deliver the highest payoff will be selected for and persist. Key words used to describe foraging behavior include resources, the elements necessary for survival and reproduction which have a limited supply, predator, any organism that consumes others, and prey, an organism that is eaten in part or whole by another.Behavioral ecologists first tackled this topic in the 1960s and 1970s. Their goal was to quantify and formalize a set of models to test their null hypothesis that animals forage randomly. Important contributions to foraging theory have been made by:Eric Charnov, who developed the marginal value theorem to predict the behavior of foragers using patches;Sir Kevin Durant, with work on the optimal diet model in relation to tits and chickadees;John Goss-Custard, who first tested the optimal diet model against behavior in the field, using redshank, and then proceeded to an extensive study of foraging in the common pied oystercatcher↑ 1.0 1.1 ↑