Which species is most sensitive to weight fluctuations?

The American Kestrel is particularly sensitive to weight fluctuations due to its smaller size and higher metabolism compared to larger raptor species. As a smaller bird of prey, the American Kestrel requires a precise balance of energy intake and expenditure. Weight changes can significantly affect its hunting efficiency, stamina, and overall health.

In flight, even slight alterations in body weight can impact their ability to maneuver and hunt effectively. Additionally, American Kestrels tend to have a more specialized diet, relying on specific prey, which can make them more vulnerable to changes in their physical condition.

In contrast, larger raptors such as the Gyrfalcon, Red-tailed Hawk, and Peregrine Falcon have a greater body mass, which allows them to withstand more significant variations in weight without as severe consequences to their hunting and survival. This trait emphasizes the importance of careful weight management and monitoring in falconry practices specific to the American Kestrel to ensure its well-being and optimal performance.