Many animals are at risk of being eaten by other animals. Such an animal must balance food intake with predation risk. These models simulate Pulliam's (1973) vigilance model, which suggests that feeding in flocks is advantageous. Collective - Foraging juncos can be attacked by a Cooper's Hawk.
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In 1962, Rachel Carson published 'Silent Spring', which drew attention to how the use of pesticides was indirectly decimating bird populations by causing thinning of egg-shells.
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This model simulates foraging behavior of honeybees. It is designed to illustrate Charnov's (1976) Marginal Value Theorem, which predicts how long an animal should forage in a given patch. The user can modify environmental conditions and the time-per-flower for two different bees.
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Connell's 1961 classic competition experiment is modeled. You can explore the fundamental and realized niches of two species of barnacles, Chthamalus and Balanus. One species can grow at a wider range in depth but can be outcompeted, while the other species is limited to deeper rock.
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