June 24, 2005— U.S. researchers have discovered one of the most sophisticated signaling systems among animals for warning of danger — alarm calls that can describe the kind of predator and even its size.
Writing in the current issue of Science, lead author Chris Templeton of the University of Washington in Seattle reported that black-capped chickadees warn birds of the same feather with information-packed calls.
Link: Full Article
Link: All about the Black-capped Chickadee from Cornell Labs
Black-capped Chickadee image © 2005 Michael Allen McDowell