Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites
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Year Totals Observation hours
2010 72 192:15
2011 64 548:35
2012 116 598:30
2013 57 613:57
2014 91 701:15
2015 248 626:35
2016 113 715:25
2017 125 674:15
2018 87 645:36
2019 115 642:45
2020 23 188:20
2021 81 381:00
2022 17 97:55
2023 55 227:05
 
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