Slept with the window open and no radio on (something I couldn't do any time except Saturday night: normally the street noise at 4am wakes me up without some preexisting sound covering it a bit) and didn't hear any extra coyote noise, so looks like my BIL was right and she didn't have nursing or recently weaned pups.
I'm all sorts of conflicted about this coyote's death: she'd taken five chickens recently, but she'd made my cousin pay more attention to where his chickens were free-ranging. She had no fear of humans, since she'd been actively fed by someone as a pup. She'd been actively fed by someone as a pup, so she was the biggest female coyote I'd ever seen. She was a danger to chickens, but a predictable member of the neighborhood: there will be another coyote by end of summer, and who knows what it will be like?
There's a three-acre land-locked parcel out of the SW corner of the forty I'm on: it has an abandoned house, and two acres are a closed stand of native hazelnut, the favorite denning habitat for coyotes. It abuts the Tacoma Rail spur line that meets the BNSF mainline at St. Claire crossing, running through a city of Lacey Park Reserve and past the corner of my BILs place, connecting my place to the McCallister Creek and the Nisqually River, to big farms and to the Fort. If Coyote kept a MLS for his children, it would be a listing to start a bidding war.
Oh, well: no local pups is good, and coyote bidding wars usually end with the most aggressive males wearing each other down or getting hit on the road, and the sneakiest female claiming the den. We will wait. We will know eventually.