Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites
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Year Totals Observation hours
2010 73 192:15
2011 353 548:35
2012 374 598:30
2013 416 613:57
2014 646 701:15
2015 339 626:35
2016 519 715:25
2017 310 674:15
2018 320 645:36
2019 340 642:45
2020 23 188:20
2021 164 381:00
2022 6 97:55
2023 3 10:15
 
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