15 abril 2015
It’s not all bad for crow chicks who have to share their nest with an uninvited pushy guest such as a cuckoo youngster. For one, they can sit back and wait for food to arrive while the cuckoo chick does all the begging for nourishment. So says a researcher who led a study into the pros and cons associated with the parasitic relationship of the great spotted cuckoo with the carrion crow.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/CEhjF5qTPxI/150415103015.htm
