Just before sunset I was out doing a bit of garden work and noticed how quiet it was; suddenly there was a chorus of coyotes in the small woods beyond the garden, and another to the north of us. It went on for quite a while, and then a third group joined in. It reminded me of what I call the 'evening bark' that dogs practice, passing whatever messages they have along from one to the next. This was, I expect, a territorial thing last night letting each of the other groups know where everyone was.
As long as I know where the cats are, I can relax and enjoy the concert.