They, along with the crows, are the most wary of birds. The slightest noise or sighting, and whoosh! Wings flapping, they climb vertically. They got muskles.
BTW, if I were to own just one bird book, it would be the Audubon Society’s The Sibley Guide to Birds. Magnificent book. David Sibley started drawing birds at age 7, but even so, it’s hard to believe a single person could do these 1000s of drawings in a lifetime.