Ornithologist and naturalist well known to Russian wildlife-fanciers by his popular books on natural history. Was famous among professional ornithologists for his experience in watching and collecting the birds.Originated from a noble family of von Spangenbergs, born in a village of Transbaikalia. After gymnasia was conscripted into the Red Army and demobilized in 1921. Graduated from Moscow University in 1930. Worked in Research Institute of Game and Fur Farming, participated in numerous expeditions, donated all his collections to the Museum. In the staff of the latter since 1946, senior researcher of the Section of Ornithology since 1950. Co-author of fundamental checklist “Birds of Soviet Union”. Was first to gather and keep oological collections in Russia.