Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
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Year Totals Observation hours
2000 517 93:00
2001 705 287:00
2002 673 316:00
2003 872 382:42
2004 861 342:37
2005 893 554:39
2006 1106 657:43
2007 1011 725:19
2008 2075 1488:17
2009 1658 799:54
2010 1642 900:27
2011 1659 834:45
2012 1330 840:54
2013 605 890:41
2014 1702 864:15
2015 702 727:16
2016 1324 659:29
2017 1387 777:46
2018 1638 766:48
2019 1454 683:31
2020 1899 839:09
2021 1862 921:00
2022 1495 848:41
 
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