Content of heavy metals in the internal organs of some waterfowl birds in Selenga delta

The results of laboratory researches on identification the content of heavy metals - plumbum, cadmium, mercury in internal organs of some waterfowl birds are presented, thr researches have been carried out in Irkutsk MVL. As the objects of the research were considered the wide spread species of waterfowl birds, such as : 1. Anas crecca - 2 probes (№: 1, 10); 2. Anas platyrhynchos - 2 probes (№: 2, 7); 3. Aythya ferina - 1 probe (№: 3); 4. Anas strepera - 2 probes (№: 4, 6); 5. Aythya fuligula - 1 probe (№: 5); 6. Anas penelope - 1 probe (№: 8); 7. Anas clypeata - 1 probe (№: 9). Only in three probes of them - № 4 Anas strepera, № 5 Aythya fuligula № 8 Anas Penelope, the content of all three researched elements (plumbum, cadmium, mercury) doesn’t exceed an acceptable norm, it is possible related to the fact that these species inhabited in less polluted areas ot the world.