C. J. Sanderson G. H. Heinz 1990 <p><span>Adult, male mallards (</span><i>Anas platyrhynchos</i><span>) were given a choice between a control diet and a diet containing 5, 10 or 20 ppm selenium as selenomethionine dissolved in water and mixed into the diet. At 10 and 20 ppm, selenium-treated diets were avoided. Avoidance appeared to be caused by a conditioned response, probably to illness caused by the selenium and not to an aversion to the taste of the selenium.</span></p> application/pdf 10.1002/etc.5620090906 en Society of Environmental Toxicology and Chemistry Avoidance of selenium-treated food by mallards article