Animals, Newborn, Environmental Pollutants - adverse effects, Biomarkers - analysis, Male, Environmental Exposure, Vitamin A - analysis, Birds - physiology, Cytochrome P-450 CYP1A1 - analysis, Liver - chemistry, Animals, Polychlorinated Biphenyls - adverse effects, Liver - drug effects, Geologic Sediments - chemistry, Female, Cytochrome P-450 CYP1A1 - pharma...