I was watching some crows eat some food in a parking lot yesterday. The first one landed next to a tiny morsel, investigated it a bit, then did a head bob thing

I was watching some crows eat some food in a parking lot yesterday. The first one landed next to a tiny morsel, investigated it a bit, then did a head bob thing while looking up and making what sounded like a cross between a hoot and a caw. Another crow swooped in about ten seconds later and they poked at it a bit. Then a lady walked over towards them, they flew away, and she dumped out her half eaten to-go meal in the parking spot. Too easy.