Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
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Year Totals Observation hours
2006 818 23:40
2007 757 71:05
2008 4296 94:25
2009 713 91:45
2010 3569 159:55
2011 2949 208:42
2012 5641 196:45
2013 3116 239:26
2014 2432 218:15
2015 2907 145:35
2016 2928 217:52
2017 3504 191:09
2018 6485 243:43
2019 2448 191:56
2020 4188 108:23
2021 2632 156:10
2022 2172 112:25
 
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