Ravens, ravens, ravens...
If you haven't already gone down this rabbit hole, prepare to spend a worthwhile fifteen minutes or more (a lot more) watching the fascinating videos of Fable the Raven on youtube. Fable is a raven raised by Amy, a falconer in Great Britain.
It was Fable who inspired me to include the ravens Ardeth, Blackbeard, and André in the Vox Oculis Trilogy. Some readers found it a stretch to believe ravens were capable of some of the acts these ravens performed in the novels, however after viewing some of these videos, perhaps you will not find it so unbelievable!
If watching some of those videos fascinates you in the same way they fascinated me, you might want to take the next step and dig into this excellent book (as Blue does in VO: Forest): Mind of the Raven: Investigations and Adventures with Wolf-Birds written by a fellow Vermont author, Bernd Heinrich.
(BTW, have you spotted the raven on the cover of Forest yet? ;^)