Several great blue herons are nesting in a group of giant white-barked sycamore trees off a trail in Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A blue heron takes off from the branches as a second one squawks at the other. A large rookery of great blue herons are nesting in a group of giant white-barked sycamore trees off the trail at Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A blue heron sails across a clearing blue sky Sunday. The birds are among the largest in North America.

photo by: Kevin Anderson

great blue herons are nesting in a group of giant white-barked sycamore trees off a trail in the Mill Creek Streamway Park in Shawnee. The birds’ breeding season is from April to July.

photo by: Kevin Anderson

Several great blue herons are nesting in a group of giant white-barked sycamore trees off a trail in Mill Creek Streamway Park in Shawnee. A single blue heron sits on the topmost part of the tree.

photo by: Kevin Anderson

A collection of nests rest throughout the treetops as a lone bird comes back home to a rookery of great blue herons nesting in a group of giant white-barked sycamore trees off the trail at Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A rookery of great blue herons are nesting in a group of giant white-barked sycamore trees off the trail at Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A great blue heron flies back to the nest with a stick in its beak. A rookery of great blue herons are nesting in a group of giant white-barked sycamore trees off the trail Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A blue heron comes back to the tree tops at a large rookery of great blue herons nesting in a group of giant white-barked sycamore trees off the trail at Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A blue heron takes off from the tree branches at a large rookery of great blue herons nesting in a group of giant white-barked sycamore trees off the trail at Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A blue heron makes its way back to the treetops at a large rookery of great blue herons nesting in a group of giant white-barked sycamore trees off the trail in Mill Creek Streamway Park in Shawnee.

photo by: Kevin Anderson

A single blue heron sits on the topmost part of the tree in a rookery of great blue herons nesting in a group of giant white-barked sycamore trees off the trail at Mill Creek Streamway Park in Shawnee. .