Migratory Birds of the Great Lakes University of Wisconsin Sea Grant Institute
 about habitat birds + science 20 birds
aerialist raptors
copyright UW Sea Grant, writer: L. Wiland, design: T. Yao contact us credits

Great Blue Heron Great Lakes Habitat, page 2

These nesting grounds usually comprise isolated stands of trees. Typical nesting trees are tall, holding one or more twig-and-stick nests in the tops of upper limbs, up to 100 or more feet off the ground. Heron colonies may last for decades, though over time, concentrated heron droppings can sometimes kill the trees. The birds' shallow-water feeding areas may be located several miles from the colony.

ML Reeb writer: Laurence Wiland design: T. Yao