Board Thread:Speculation House/@comment-24119615-20141123041901/@comment-4010415-20150113020838

There's also a crow/raven in the Red Trailer and Black Trailer, so most people have been assuming it's a crow and symbolizes Qrow keeping an eye on things.

The black thing that flashes past in during the overhead view of Ruby is the crow, btw.

In the Black Trailer, the crow was perched at the edge of the cliff and flew away when Blake and Adam got there.