Mmmm, there was a very old bug that didn't spawn the crows, when you played an old save game on a new version.
Did you start from the very beginning? And are you sure you haven't picked it up, yet?
i had played the game before and I was pretty much done but then I couldnt continue and had to restart
and yea i dont have the big healing potion recipe wich is what you need for the deep Forest
Edit: I restarted and I the crow was there but it gave me other recipes(night vision potion etc.) I thought that it would give you the recipe for the big healing potion etc.
2nd Edit: i figured out since it was wuite logical for the crow to be in the cave I went there and I found the location