Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
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Year Totals Observation hours
2000 79 93:00
2001 309 287:00
2002 255 316:00
2003 285 382:42
2004 214 342:37
2005 382 554:39
2006 463 657:43
2007 800 725:19
2008 1243 1488:17
2009 568 799:54
2010 550 900:27
2011 647 834:45
2012 774 840:54
2013 947 890:41
2014 1424 864:15
2015 721 727:16
2016 623 659:29
2017 960 777:46
2018 973 766:48
2019 718 683:31
2020 1069 839:09
2021 1312 921:00
2022 1432 853:07
 
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