Contact: Mary Beth OLeary
Caption: Of course, roosters crow with the dawn. But are they simply reacting to the environment, or do they really know what time of day it is? Researchers reporting on March 18 in Current Biology, a Cell Press publication, have evidence that puts the clock in "cock-a-doodle-doo" (or "ko-ke-kok-koh," as they say in the research team's native Japan).
Credit: Current Biology, Shimmura et al.
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Related news release: Putting the clock in 'cock-a-doodle-doo'