Our Pawnee Lake is also a nesting place for a couple bald eagles.  Male and female eagles build the nest together.  The nest building activity is part of their pair bonding.  Nest building may begin 1-3 months prior to mating and is considered part of the breeding process.  Breeding season varies regionally, beginning in November and December in southern areas.  Bald eagles nest in trees usually choosing the tallest living tree (super canopy) with accessible branches.  The nest is built high in the tree below the crown supported by large forked branches near the trunk.  Eagles have strong nest site fidelity, meaning they return to the same nest and nesting territory each year.  If they successfully produce young at a nest, they are likely to return to that nest year after year.  Pawnee has been fortunate by having eagles near the lake for multiple years.