When does noise become a meaningful message?

(Smithsonian Tropical Research Institute) Background noise is usually regarded as a nuisance that masks important sounds. But noise can convey information about important environmental conditions and allow animals to make informed decisions. When bat researchers played rain sounds for two different species of bats, both species chose to delay emergence from their roosts.

from EurekAlert! - Social and Behavioral Science http://bit.ly/2SfY3Ue