It may be that the sparrows in your neighbourhood need your help!
You can research ideas online eg.
- Maybe the lack of nest-sites can be helped by providing communal nest boxes?
- Maybe you could plant some of the food plants they are missing?
- Could you provide dust or water baths that would help the sparrows?
When you have researched what problems face your local sparrows, why not improve their chances by these or other habitat activities?