24 julio 2015
From ancient times, people have been aware of the rooster’s “cock-a-doodle-do” that marks the break of dawn, but has anyone wondered who crows first? In a new study, biologists have revealed that there is actually a systematic rule based on social ranking that determines the order of crowing in roosters.img src=»http://feeds.feedburner.com/~r/sciencedaily/~4/Eea0vj9Pewk» height=»1″ width=»1″ alt=»»/
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Eea0vj9Pewk/150724081943.htm
