Any Idea of what this is

[Cdacosta]

My duck has this on both wings and bleeding anyone know what this is? He doesn’t like when you touch it ether. I have put Vetericyn Spray on it for now.

 

[sourland]

Busted blood/pinfeather that either he or a flock mate has been picking on.

 

[Cdacosta]

Busted blood/pinfeather that either he or a flock mate has been picking on.

What’s the best thing to do ?