These ravens are for Liza.

They are such huge birds and when they fly past, you can hear the whoosh of their wings. They also have a great many croaks and vocalizations. They are bold and avid scavengers. One day I was out quite early and I saw a group of ravens opening big green garbage bags in the open back of a large pick-up truck in front of a hotel. I thought what a huge mess the owner would find upon waking up and coming out to the truck. 

Then a few weeks later, in a completely different part of town, I saw a gang of ravens doing exactly the same thing in another truck. Then, I realized they have sussed out that bags in the back of trucks are worth opening and they have a modus operandi.