Young Pigeon Attacked

Hi all,

Sad to say a young pigeon was attacked by the local menacing cat,

He's just come to my patio and coughed up blood and collapsed and closed his eyes. I have him in a basket and put him in a warm area. He is warm to the touch and his eye has now half opened. As I am anxious I cannot tell if his chest is rising but is he likely to have died now? His neck is limp forward and I see no movement.