The Weekly Newsmagazine of Science
Volume 156, Number 1 (July 3, 1999)References & Sources
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If Mom chooses Dad, more ducklings survive
Female mallards allowed to mate with the drake they desire had more of their offspring survive than did ducks with males chosen for them.
From Science News, Vol. 156, No. 1, July 3, 1999, p. 6. Copyright © 1999, Science Service.
Copyright © 1999 Science Service