A beggars banquet: Carrion crow chicks sit back while cuckoo chick does all the begging

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.



from Latest Science News -- ScienceDaily http://ift.tt/1NJOiVx via Karis World