Injured bird...anything we can do?

Try a vet clinic? They usually work with rescues

I know this because about 3 weeks ago, while fishing, I ended up with a whistling duck duckling. A bass had struck a group of 4 and took one under. As I ran over, she popped back up and frantically made her way to the bank. But the parents had moved on further along with remaining 3 and I couldn't leave her there. Had a bit of damage to leg where the bass had grabbed hold. Took to a local vet who took her, no charge, to keep over day or so, then they would bring back to same location for mom n dad to find.

They called to say they were able to find the pond and parents and reunite them.