Contaminant exposure and biomarker response in embryos of Black-crowned Night-herons (Nycticorax nycticorax) nesting near Lake Calumet, Illinois - Levengood, J.M.; Wiedenmann, L.; Custer, T. W.; Schaeffer, D.J.; Matson, C.; Melancon, M.; Hoffman, D.; Scott, J.W.; Talbott, J.L.; Bordson, G.O.; Bickham, J. W.; Rattner, Barnett A.; et al. (Journal of Great Lakes Research, 2007)