Eaglet and an egg (which never hatched) were photographed in April
1965 in a nest on the Muskegon River in Michigan. The chipped, flaked condition of the egg is ascribed to a calcium deficiency attributable to residues of DDT or its metabolites in the parent. University of Wisconsin wildlife ecologist Joseph J. Hickey, calls DDT a “chemical of extinction.” See page 548, em>Science 7 February 1969.