These are Yellow-headed Blackbirds (most of them). It took me forever to find that out, and actually I didn’t, hubby did. I spent hours and hours on the Internet, looking up “orange and black” birds. Finally, I decided they were Orioles, but I couldn’t find a photo of one with coloring just like the birds in our front yard. Hubby — somehow — discovered they were YELLOW-headed blackbirds. Well, they look orange to me.
Photography 101: Swarm