But they only add to the value of these open ... back in time," said Reinartz, retired director of the UWM field station and current president of the Friends of Cedarburg Bog. "These nest boxes ...

Humans' fascination with the whimsical life of birds goes back literal centuries ... birds build cup nests, any nesting box ...

Nest boxes help many species of birds, including eastern bluebirds, tree swallows and wood ducks, by providing protection during nesting season.