Ravens use "hand" gestures.

[Telarus]

http://www.scientificamerican.com/article.cfm?id=ravens-use-hand-gestures

Cool. Interesting that we're making some huge advances in recognizing how animals communicate with each other at an individual level.

Oh, Here's another interesting one in that vein (although more at the collective/egregore level).

Bee Swarms Mimic Human Brain Neurons to Make Decisions

[Phox]

Said before, and I'll say it again. Those motherfucking birds are just too damn smart. I'm thinking Corvids are angling to take over. 

Zero,
Knew there was some reason it was called a "murder". 

[Luna]

The study I remember about corvids was the facial recognition one.  Wing a rock at a crow, and not only will the fucker remember you and attack you on sight later, he'll describe you to the others.  They tested with masks, even if the one they hit wasn't there, others from the murder KNEW.

[Bruno]

Do ravens flip each other the bird?

[Luna]

The study I remember about corvids was the facial recognition one.  Wing a rock at a crow, and not only will the fucker remember you and attack you on sight later, he'll describe you to the others.  They tested with masks, even if the one they hit wasn't there, others from the murder KNEW.

Found the article:

http://www.nytimes.com/2008/08/26/science/26crow.html

[ñͤͣ̄ͦ̌̑͗͊͛͂͗ ̸̨̨̣̺̼̣̜͙͈͕̮̊̈́̈͂͛̽͊ͭ̓͆ͅé ̰̓̓́ͯ́́͞]

Do ravens flip each other the bird?

You bastard.