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 0 1488:17
2009 8 799:54
2010 7 900:27
2011 16 834:45
2012 63 840:54
2013 100 890:41
2014 103 864:15
2015 6 727:16
2016 11 659:29
2017 11 777:46
2018 1 766:48
2019 5 683:31
2020 3 839:09
2021 5 758:38
 
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