The secretary bird is a mostly-land-based species of bird that hails from sub-Saharan Africa and kills its prey by kicking them to death.

A certain species of bird can kill snakes with its feet. 
Hailing from sub-Saharan Africa, the secretary bird lives primarily on land. 
The creature itself is quite large and feeds on small mammals and reptiles; using its feet to repeatedly strike its prey to death--or at least to stun them. 
Video from the Royal Veterinary College and Royal Holloway at the University of London shows one such secretary bird, named Madeleine, in action. 
With a quick furious succession of motion, Madeleine kicks a rubber snake's head. 
Slow motion captures one such movement that