I’ve seen a few caracaras, but this is a new one for me. Very nice looking bird, and I think this is a wonderful portrait, since it effective portrays it doing what it does best (scavenging).
The only real suggestion I have is losing some of the empty space on the left, or adding more from the right if you have the canvas in the origjnal frame. The disparity between the spacing on the two sides of the carcass makes the composition feel a bit uneven to me.