Birds as objects in bioindication of radioactive pollution

This article is a review the recent results of research in the accumulation of natural and artificial radionuclides in birds from Russia (Adigea, Kras nodar, Rostov, Astrahan and Moscow regions, Novaya Zemlya isles), Ukraine, Vietnam, Poland, Ethiophia and Mongolia after global precipitation and loca l pollution, such as in the East-Urals radioactive region and radioactive z ones after the Chernobyl accident. Resident birds reflect local level of ra dionuclide contamination. The Sr-90 concentration in the food of the Pied F lycatcher had a tendency to increase in dependent of age. The Common Jay an d the Mallard were the most contaminated with Cs-137 in the Bryansk region. The total content of various radio-isotopes of plutonium in bird bones fro m Southwest Russia were hundred and thousand times more, than in Mongolia. Activity levels in specimens From Ethiopia bear record to Ethiopia can notb e a "pure" control site in radioecological research and radioactive backgro und since it does not significantly differ from Turkmenia and Mongolia.