A few more words about my experience with the (alleged) flock of eagles. Birds of prey do not typically flock. There is little reason. They do not need to fend off predators. They compete with one another over food sources. And while some bald eagles migrate short distances, those in Florida do not; that eliminates the need for the aerodynamic advantage enjoyed by ducks and geese.
And yet bald eagles are frequently seen in large numbers.