Female adult Common Cuckoos appear in two color morphs, shown here as half of the rufous (hepatic) form (left) and half of the gray morph (male-like, right). Several species of cuckoos, a genus of ...
11don MSN
How a biological version of rock-paper-scissors determines if lizard colors are maintained or lost
Two new studies into lizard colors reveal how one species maintains its colorful diversity while others are losing their ...
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