First Heron wasted no time defending his territory and immediately went into a threat display.
As soon as he landed, Second Heron answered back with his own threat posture, but he wasn't quite as convincing.
He spread his wings...
Rick, Matty and I really enjoyed watching this behavior. At first we wondered if the two herons were engaging in courtship behavior, but their body language soon let us know it was a threat display. At the heronry in Cincinnati, we've seen a lot of courtship displays in the trees, but we were never lucky enough to witness threat postures and displays because the birds are too timid to fish near humans.