Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2010 83 192:15
2011 44 548:35
2012 76 598:30
2013 186 613:57
2014 150 701:15
2015 178 626:35
2016 201 715:25
2017 150 674:15
2018 144 645:36
2019 173 642:45
2020 25 188:20
2021 67 381:00
2022 51 97:55
 
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