We have a birdbath in our front yard. A few weeks ago I saw a crow which had ~2 inch long piece of something which looked like dried white bread in its beak. As I watched it from inside, it moved around the birdbath on the railings, very carefully, for sometime, making sure that there was no danger. Then, it sat on the edge of the birdbath and dropped the piece in water - waited 1-2 seconds and picked it up and then ate it.

I'm really bummed that I didn't capture it on video but to me it was a sign of intelligence that the crow knew that it could soften that piece of bread by dipping in water so that it could eat it.