I once watched a scrub jay (who had a feud with the local squirrel) very deliberately lay a peanut vertically in mulch, tap it into the ground, and lay a large

I once watched a scrub jay (who had a feud with the local squirrel) very deliberately lay a peanut vertically in mulch, tap it into the ground, and lay a large square of bark over top. It was very pleasingly methodical bird.