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An adult great blue heron gets ready to land, while clutching a stick in its bill, in a central Maine rookery. The rookery, in a closely guarded location, has 36 nests, 87 young and 15 adults.
An adult great blue heron flies in, with a stick clutched in its bill, while fledgling herons occupy a nests in a central Maine rookery.
Three fledgling great blue heron chicks watch for their parents in a central Maine rookery.
A robust colony of great blue herons is observed by Maine state wildlife biologist Danielle D'Auria and a program volunteer, in a Central Maine bog.
Two nests of great blue herons occupy one tree in a central Maine rookery.
Maine state wildlife biologist Danielle D'Auria observes a colony of great blue herons.
More than 20 great blue herons occupy one tree.
A robust colony of great blue herons is counted and charted by a program volunteer.
Outdoors 
