The American kestrel is a small falcon found in North and South America. Often referred to as sparrow hawks, American kestrels are the smallest falcons in the Americas, as well as the only kestrels. They are extremely numerous, with an estimated 4 million living on the two continents. American kestrels are 7-8 inches in length and have a wingspan of less than two feet, making them very small for a bird of prey. Females tend to be larger than males and lack the blue-grey coloring found on the male’s wings and head.