
Songbirds in the scrublands of southern Zambia are engaged in a high-stakes arms race that they wage with colors and patterns on their eggs. It’s a battle that’s probably being fought everywhere there are birds practicing what is known as ‘brood parasitism’ — laying eggs in the nests of another bird species.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/vNwhu9UN8g8/150617162402.htm