I sure don't like hawks, but they do a quite a job on snakes around here. We have rattlesnakes in some of the higher elevations and are seldom seen where I am. Gopher and King snakes used to be very common. I wish they were with the amount of gophers around here. I hope it was just a cut nail that caused the blood, Fawn and Fam. Let us know what you see today. Spoil them with a good supplement for blood building like we talked about. The poultry vitamins like you mentioned should have adequate levels of vitamin K, among others. Good luck.