THE RESULTS OF SEASON 2014 and SEASON 2019 HAVE BEEN PUBLISHED
The monitoring results of season 2019 were published in a peer reviewed magazine Hirundo (vol. 1/2020) The article is in Estonian, but there is a rather comprehensive summary in English. To the article.
The monitoring results of season 2014 were published on June 6, 2015 in a peer reviewed magazine Hirundo – As the article is in Estonian (apart from table texts), you may be interested in an extended summary in English.