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Prey often suffer foraging costs associated with antipredator behaviours such as vigilance. Migration is one behaviour in ungulates that can lead to trade-offs between forage acquisition and predator avoidance. However, when forage intake is limited by food-handling time rather than by food encounter rate, ungulates can reduce foraging costs by synchronizing vigilance with chewing (multitasking)....
Correlational evidence suggests that animals may use changes in barometric pressure to predict or respond to changes in weather. Birds adjust the timing of migratory flights and migratory restlessness in response to changing weather, and they make facultative movements in response to storms during winter and breeding. Using the pressure chamber of a hypobaric climatic wind tunnel we tested the responses...
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