After many years of wondering how I would know a raven if I saw one, as opposed to a crow, I have finally learned. And discovered that our yard is ruled by a raven.
The difference is simple to spot: crows always flap; ravens glide. Now that I know the difference, it seems obvious and I feel as if I should go apologize to the majestic bird for muddling him with his lesser cousins.
He likes to sit on one of the stubby branches of the fir tree at the bottom of the yard, the few that are left after a predecessor in title from some other part of the company valued sunlight over trees.
We still have plenty of crows, too. They like the compost pile and tend to spread it. Actually the raven may help them. I'll have to watch more and learn his habits.