Red-rumped swallow (Cecropis daurica, 金腰燕).
Since early spring there have been large numbers of them hunting around the river and lakes. There are now fewer and fewer of them about. Last year, at this time, this one was injured his wing flying into a tree by the foot of Yuelu Mountain. I moved it where it would be more protected from people and cats, managed to give it some water and watched it until it went to sleep; sadly nature took its course.
