The American kestrel (Falco sparverius), sometimes colloquially known as the sparrow hawk, is a small falcon, and the only kestrel found in the Americas. It is the most common falcon in North America, and is found in a wide variety of habitats.
Grey goshawk of Australia (white morph) - the only pure-white bird of prey that is not a result of albinism. Also, BEAUTIFUL. I felt truly privileged to see one land on the tree branch outside my window.