2021100th Anniv. of the Estonian Ornithological Society - First Day Cover

The Estonian Ornithological Society was established on 1 May 1921. For over one hundred years, the society has contributed to the research, protection and introduction of our bird species. With more than 600 members, the ornithological society is currently one of the largest nature protection societies in Estonia and it is also a partner of the international bird protection organisation BirdLife International. We continue to stand for the wellbeing of Estonian wild birds.