I awoke in pre-dawn blackness to realize a Saw-whet Owl was tooting away right outside our bedroom window. Managed to bestir myself and get outside with my owl light, but then our motion-sensitive lights activated and maybe that spooked the bird. It then vocalized from across the marsh in Thompson Sanctuary, and with playback I was able to coax it back into the trees by our house. But, as so often happens with Saw-whets, it remained hard to see, changing perches a couple times; I managed only to glimpse it in flight.
It vocalized giving both its typical irregularly paced tooting song and the strange squeals.
Though some years we have Saw-whets around here all summer, this year we didn't (at least I never heard any), so I suspect this individual was a migrant.