Productivity of Columbia River Eagles and Contaminants Bald eagle reproduction and productivity (number of young produced per nesting pair) in the Pacific Northwest have greatly increased since DDT and other organochlorine compounds were banned in the 1970s.
(Productivity of Columbia River Eagles and Contaminants Bald eagle reproduction and productivity (number of young produced per nesting pair) in the Pacific Northwest; have increased; T:since DDT and other organochlorine compounds)
Productivity of Columbia River Eagles and Contaminants Bald eagle reproduction and productivity (number of young produced per nesting pair) in the Pacific Northwest
have increased
T:since DDT and other organochlorine compounds