What is one disadvantage of lighter bones in bats?

Lighter bones in bats contribute significantly to their ability to fly efficiently, as they reduce the overall body weight, making it easier for them to become airborne and maneuver in the air. However, a notable disadvantage of having lighter bones is that it can make the skeletal structure more susceptible to damage. This is particularly true in environments where bats may be exposed to strong winds or potential collisions. The reduced bone density and strength mean that, while their lightweight structure aids in flight, it can compromise their resilience against physical impacts or environmental stresses. Hence, the tendency for lighter bones to lead to vulnerability in situations involving wind or impact plays a significant role in understanding the trade-offs involved in their evolutionary adaptations.