I grew up in northeast Ohio in the 1970s, which meant, as a duck hunter , I grew up hearing duck sounds from mallards and black ducks, both of which quack. My father and I didn’t attempt to call wood ...

That a parrot can copycat sounds is nothing new. But vocal learning is not common in animals. Researcher Carel ten Cate of the Institute of Biology Leiden (IBL) of Leiden University has now discovered ...