I think you are very naïve about how complicated language is. I'm not saying animals lack any intelligence whatsoever, but I don't see how remembering faces means you'll be able to talk. The crows could just have acted hostile to the masked people in front of each other. Communicating is not the same thing as language which is vastly more expressive than any non-human animal is capable of.

Not everyone agrees that Neanderthals possessed language like us either, although evidently they are much, much closer evolutionarily to us than crows or whales, and it is vastly more plausible that they talked. Having Neanderthal DNA doesn't mean that we talked with them though, it needn't have been even consensual, unfortunately.