F/ 9.0, 1/320, ISO 500.
Day 319 / 365
What birds spend all their time on their knees?
Birds of prey!
Interesting Fact: Birds are amazingly adapted for life in the air. The Red-tailed Hawk is one of the largest birds you’ll see in North America, yet even the biggest females weigh in at only about 3 pounds. A similar-sized small dog might weigh 10 times that. ( https://www.allaboutbirds.org/guide/Red-tailed_Hawk/lifehistory )