393). The black-capped chickadees develop an increased metabolic rate due to the environmental conditions and all their energy is used to finding food (Barkan, 1990, p. 393; Odum, 1942, p.513). Black-capped chickadees are only able to store a restricted amount of energy and therefore if they are unable to find food within 24 to 48 hours they can die of starvation (Barkan, 1990, p. 393). The restricted amount of energy black-capped chickadees can store is due to an adaptive fat regulation hypothesis that is a balancing relationship between predation and starvation (Rogers, 2008, p. 29). If the black-capped chickadees are able to store more energy by increasing its fat content, it becomes a slower flyer and makes it easier for predation (Rogers, 2008, p. 29). The benefits of the adaptive fat regulation outweigh the costs, which allow the black-capped chickadees a higher rate of survival during the winter months (Rogers, 2008, p.
393). The black-capped chickadees develop an increased metabolic rate due to the environmental conditions and all their energy is used to finding food (Barkan, 1990, p. 393; Odum, 1942, p.513). Black-capped chickadees are only able to store a restricted amount of energy and therefore if they are unable to find food within 24 to 48 hours they can die of starvation (Barkan, 1990, p. 393). The restricted amount of energy black-capped chickadees can store is due to an adaptive fat regulation hypothesis that is a balancing relationship between predation and starvation (Rogers, 2008, p. 29). If the black-capped chickadees are able to store more energy by increasing its fat content, it becomes a slower flyer and makes it easier for predation (Rogers, 2008, p. 29). The benefits of the adaptive fat regulation outweigh the costs, which allow the black-capped chickadees a higher rate of survival during the winter months (Rogers, 2008, p.