The heron has several predators, including the red-tail hawk, the bald eagle, the raccoon and the red fox. The heron's eggs are also prone to predators, both from birds of prey when the heron builds its nest high in the trees, and from a range of predators when the nest is built on the ground.
The great blue heron can be found in North America, Central America, the Galapagos Islands and the Caribbean. It also been found as a rare vagrant in parts of Europe. While it can fall prey to larger creatures, such as eagles, alligators or crocodiles, the adult blue heron's large size allows it to choose from a variety of prey. The diet of the blue heron ranges from frogs and fish to small reptiles and mammals, large insects, crayfish and birds.