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 149 799:54
2010 2 900:27
2011 3 834:45
2012 2 840:54
2013 10 890:41
2014 2 864:15
2015 2 727:16
2016 6 659:29
2017 5 777:46
2018 3 766:48
2019 256 683:31
2020 0 839:09
2021 21 722:09
 
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