Acorn Woodpeckers live in close-knit family groups and have one of the most complex breeding systems of any bird in the world. In about 20 percent of family groups, up to 3 related females may lay ...
Multiple paternity is no advanatge for the offspring of mice in the case of an infection with Salmonella. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted ...
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