Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2010 112 192:15
2011 659 548:35
2012 531 598:30
2013 676 613:57
2014 999 701:15
2015 964 626:35
2016 1042 715:25
2017 443 674:15
2018 821 645:36
2019 1119 642:45
2020 160 188:20
2021 495 381:00
2022 55 97:55
 
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