Value for value received

The other day, I was walking to work. I heard a tching! and noticed a quarter rolling around on the sidewalk. Looking up, I saw a crow (or a raven?) hopping on the telephone pole. I assume he must have dropped it from above. I picked up the quarter (Nebraska) and continued on to work.

At lunch, there was a (the?) crow hopping around on the steps by the canal. I fed him some of my sandwich. At least 25 cents worth.