Bat Hormones
Male bats with high testosterone levels have large forearm crusts when females are fertile
December 17, 2020
Male Fringe-Lipped bats smear a sticky, odorous substance on their forearms. When this was discovered, researchers guessed that it might play a role in mating. Post-doctoral fellow Mariana Muñoz-Romo has confirmed that the presence and size of the forearm "crust" is, indeed correlated with other reproductive traits.