Most birds have distinct calls that tend to stay the same. It’s how birders can recognize a species without seeing it. But new research shows these tunes can change. Over the course of two decades, ...
April 17 (UPI) --If a Java sparrow ever asks to dance with your date, be forewarned, he or she may have something else in mind. According to a new study out of Japan, Java sparrows are more likely to ...
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