Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 0 287:00
2002 0 316:00
2003 0 382:42
2004 0 342:37
2005 0 554:39
2006 0 657:43
2007 0 725:19
2008 174 1488:17
2009 113 799:54
2010 204 900:27
2011 241 834:45
2012 424 840:54
2013 142 890:41
2014 808 864:15
2015 264 727:16
2016 400 659:29
2017 312 777:46
2018 116 766:48
2019 479 683:31
2020 386 839:09
2021 5825 766:08
 
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