Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
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Year Totals Observation hours
2000 55 93:00
2001 367 287:00
2002 327 316:00
2003 496 382:42
2004 1183 342:37
2005 1412 554:39
2006 6248 657:43
2007 3386 725:19
2008 7339 1488:17
2009 3384 799:54
2010 6841 900:27
2011 2770 834:45
2012 2257 840:54
2013 4848 890:41
2014 2326 864:15
2015 4301 727:16
2016 3381 659:29
2017 1927 777:46
2018 10449 766:48
2019 6186 683:31
2020 13389 839:09
2021 1484 921:00
2022 2853 853:07
 
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