Not in my experience. They hunt together to take down large dogs, and two or three at a time have attacked in our yard in broad daylight to get at the chickens. When they catch something, you can hear the howling of 5-10 of them, calling to the others to come join in the feast.
I agree with you. I’ve seen groups of 3 or four moving together at dawn and dusk in the thinly populated desert NW of Phoenix.