Odd! Birds Screech at Avian Funerals

When confronting a dead jay splayed out on the ground, the birds dashed to a tree and began a series of loud, screeching calls to attract other jays, which joined and added their voices to the choir. Iglesias found that these shrieking sessions could last from a few seconds to as long as 30 minutes.

http://www.livescience.com/23102-some-jays-have-screeching-funerals-for-dead.html