Wing Structure
Did you know that bats have thumbs? Bats are mammals like us, so they have an upper arm, forearm, wrist and hand with four fingers and a thumb. The bones are modified for flight, but the similarity in the basic structure shows an evolutionary relationship between bats and humans.![Wing Structure](https://learning.royalbcmuseum.bc.ca/wp-content/uploads/2022/08/RBCM-Labelled-Bat-20220912-JW-pg12-480x360.jpg)