Xploring The Nature

This Prairie Merlin is the last species I found on my birding trip last week.
Look below the tree limb and you will see dangling legs and feet from the prey that is being eaten by the Merlin, and in some pics part of it's lower body is evident.
The pics below are enlarged to better show the feet and long claws. You can see that it is feathered just above the joint.  It looks in the pic just below to have only 3 toes but with two of the toes are foreward and one toe is back.  Not sure what kind of bird has this configuration.
And the final enlargement  appears to show the head (looks like it has 2 eyes) of the prey bird between the Merlin's feet but maybe some other part of the body.  Not sure what this prey might be.  SeEtta