Crows Communicating

This morning while inside I heard a horrific noise.  It sounded like a bunch of crows screaming at one another.

I went outside to check it out and in the big tree in our front yard, now seasonally bare of leaves a lot of crows, or blackbirds,  were up near the top squawking loudly.

And down the hill,  three yards down n another big tree was another group of crows or blackbirds, or magpies squawking and looking up this way.

The group our front were clearly looking down at the other group.

It appeared each group of birds were angry with the other group.  Was it a territorial kind of thing?  Or was it a Romeo and Juliette kind of thing?

Or a bullying issue?