Neighborhood watch and more: How reed warblers watch out when there's a cuckoo about
Sunday, January 24, 2016 - 15:20
in Biology & Nature
A study of reed warbler behavior reveals for the first time that in assessing the risks posed by cuckoos the birds combine information from multiple sources. An 'information highway' provides one set of clues and personal encounters another. Only when both add up, do the birds take defensive action.