I was just outside eating a hamburger on a park bench and a bunch of sparrows came in front of me, looking for something to eat. I tossed them a few tiny crumbs and they seemed happy with that.
There was one thing I noticed, though: sometimes one sparrow would grab a crumb and feed it to another (adult, as far as I can tell) sparrow. What’s the possible motivation for this? Would they be mother and son? Husband and wife? Sparrow-of-the-evening and client?