No Refueling Stopovers for Migrating Bats

Migratory birds make refueling stops at one or more locations along their route. These stopover sites are critical; they provide food rich environments where birds can rapidly regain depleted fat stores before continuing their long treks. Likewise, several species of North American vespertilionid bats make long, north-south migrations each Read More...

Invincible Gibbons?

Scientists have long wondered how gibbons--a good-sized meal for the big cats, eagles, and snakes that share their habitat--have largely been able to avoid filling the bellies of those above them on the food chain. Have they evolved specific behaviors that allow them to escape unscathed from encounters with their natural predators? Read More...

When Did Cetaceans Evolve Echolocation?

Modern whales include baleen whales (Mysticeti) and toothed whales (Odontoceti). Baleen whales are large, filter feeding whales that do not echolocate. Odontocete whales tend to be smaller in size, predatory, and are capable of producing high-frequency Read More...

Why Does a Blind, Fossorial Mammal Have Iridescent Fur?

Golden moles (Chrysochloridae) are members of the mammalian Order Afrosoricida, an African group that also includes then tenrecs of Madagascar. Golden moles and true moles (Talpidae) evolved their fossorial habits independently. However, Read More...