| http://www.w3.org/ns/prov#value | - The findings also are a first step toward understanding how the birds use a combination of visual displays and songs to communicate with other males.Anderson and her colleagues published the results online Jan. 28 in the journal Behavioral Ecology and Sociobiology.Scientists had assumed the sparrows' wing-waving behavior was a signal intended for other males, but testing the observations was diffi
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