Last Saturday, our youngest daughter and I made a trip to Tulsa Zoo. We basically had the place to ourselves, so we took our time to view the animals to our heart's content. Our eyes went wide open when we saw several bald eagles in a large open area, most of them perched on tree limbs. They all seem to be actively yearning for their next meal. As a result, they were moving to different locations with those piercing eyes glaring intensely at their surroundings.
Our family has an interesting history and special relationship with these majestic birds. In 1984, my wife and her father built the first incubator in their garage to assist Sutton Avian Research Center securely transport bald eagle eggs from Florida to Oklahoma as part of their rehabilitation process. The incubator had to be designed in such a way that it can be carried to a tree top to the eagle's nest, safely store the eggs, maintain a certain temperature inside, rotate the eggs so that the yolk won't settle and transport them from Florida to Bartlesville, OK. After many years of use, the incubator (now a historical piece) resides with my father-in-law.
I highly recommend that you take the time to visit the Tulsa Zoo. Even though it is relatively small compared to the more popular zoos in the US, they have a great selection of birds, reptiles, aquatic animals, insects and mammals.