I’m pretty sure that the bird you hear in the video is an uguisu, a Japanese bush warbler. I haven’t gotten a good look at it yet but it has decided to hang around our house lately. If I could speak uguisu, I would say “you’re welcome to stay here as long as you like. Keep making that pretty music.” The cat seems to like the bird’s singing too, although this cat’s interest may not be purely aesthetic. – Kirk
I'm pretty sure that the bird you hear in the video is an uguisu, a Japanese bus…
