How do bat wing shapes vary according to different flight styles?

Bat wing shapes are highly specialized adaptations that directly correlate with a species' specific mode of flight and foraging behavior. These variations are primarily determined by the relative lengths of the forearm and the fingers, which govern the wing's extension, angle, and overall shape.123

• Open-space flight: Bats adapted for high-altitude or open-space flight, such as free-tailed bats, possess long, narrow wings. This shape supports swift flight and allows for a large turning radius.3
• Hovering and maneuvering: Bats that hover to feed on flowers or pick prey off vegetation, such as slit-faced bats and certain false vampire bats, have short, broad wings. This configuration facilitates slow flight and a small turning radius, providing the maneuverability needed for precise foraging.3

Ultimately, these anatomical modifications allow bats to optimize their energy expenditure and efficiency based on whether they are pursuing fast-moving insects in open air or navigating complex environments to reach stationary food sources.32