Accountant supermarket manager ventolin half life Swainson’s Hawk is a large Buteo hawk, colloquially known as the Grasshopper Hawk or Locust Hawk. It inhabits North America mainly in the spring and summer and spends winters in South America. It broadly overlaps in size with the Red-tailed Hawk, a related species found as a breeding resident almost throughout North America. Swainson’s Hawk is on average a little shorter in length, (43–56 cm), and weighs a bit less, (0.5–1.7 kg). However, Swainson’s Hawk has a slightly longer wingspan at 117–137 cm, with more slender, elongated wings, than the Red-tailed Hawk.