Pigeon Advice

 Advice please - I was called by neighbour to help a pigeon who was being attacked by a cat. It has feathers missing with a hole in one wing (middle) where the feathers appear to have been chewed off - there’s blood on wing.

Ive caught it & placed it in box in shed to chill..

what is best to do with the bird ?? It can stay in shed for as long as needs be - I’ll feed & water it until it recovers but is this the best action? Is there anywhere better it should be? Should I check its body for further damage or ??? 

thanks for your time ..