Chimney Swift awaits new PBS show "This Old Nest"

In the farm town of National in northeast Iowa, a 28-foot tower used to stand where Althea Sherman, a self-taught ornithologist, spent hours watching birds. Sherman died in 1943 but is still remembered for her love of birds.  Now, amateur birders and local historians interested in Sherman's legacy have built a new bird tower yards from Sherman's grave that is a replica of the original down to the dimensions and type of wood chopped from the surrounding countryside.

Sherman designed the tower to attract chimney swifts and the little birds will use the tower to nest.  Read the whole story of Althea Sherman, her tower and her love of birds here.