Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites
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Year Totals Observation hours
2010 114 192:15
2011 61 548:35
2012 208 598:30
2013 116 613:57
2014 313 701:15
2015 241 626:35
2016 351 715:25
2017 280 674:15
2018 136 645:36
2019 220 642:45
2020 5 188:20
2021 84 381:00
2022 8 97:55
2023 56 190:15
 
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