Oh wow. I thought you could only place one Infiltration and one Warrior per Birdsong. Hmm...
I've played with the Corvids three times now. Won once, lost once, and nearly won once. Now that I can place more infiltration, I may start winning more with them, which is great since I have so much fun with them already.
Might not want to get to used to the Corvid rules as they are now, the latest KS update says they'll be tweaking the Corvids and releasing a new PNP next week.