Elaborate egg shells help prevent forgery
Thursday, June 18, 2015 - 06:00
in Biology & Nature
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.