Tom Vezo / Swainson's Hawk (Buteo swainsoni) perched on fencepost, Sulphur Springs Valley, Arizona

Tom Vezo / Swainson's Hawk (Buteo swainsoni) juvenile flying, Cape May, New Jersey

Tom Vezo / Swainson's Hawk (Buteo swainsoni) juvenile at nest, Chiricahua Mountains, Arizona

TOM MANGELSEN / Swaison's hawk soaring. (Buteo swainsonii) Wyoming, USA

Tom Vezo / Swainson's hawk {Buteo swainsonii} Arizona, USA, North America

Todd Mintz / Swainson's hawk (Buteo swainsoni) spring arrival, Saskatchewan, Canada, March

Mike Read / Swainson's hawk (Buteo swainsoni) perched on branch, West Yellowstone, USA, June

Mike Read / Swainson's hawk (Buteo swainsoni) on branch, West Yellowstone, USA, June