Cute little female House Sparrow! Ideally you should try to go over way to your right and around the subject to get a better light angle (unless you were going for backlit, and also wait for a better head angle as it is looking away a bit here. Sharp details, and you got a decent background to make the sparrow stand out.
My POV it is sharp.. possibly a little too sharp, its is a record, would it have been better to see all of the sparrow? Are the reflections in the eye pleasing?
The background is well muted I feel it would have been better to see the whole bird and then perhaps the multiple reflections in the eye would not be so dominant. Maybe consider a sligltly different exposure on the background??