(University of Miami) Karla Rivera-Cáceres, a University of Miami biology graduate student, plays a harmonious duet of singing wrens from a recording she captured out in the field during a recent trip to Costa Rica. 'The song sounds like one bird but if you listen closely, it's a male and female wren singing a duet in perfect unison,' said Rivera-Cáceres.
from EurekAlert! - Social and Behavioral Science http://ift.tt/2jLG0lX
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