Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 1 287:00
2002 0 316:00
2003 0 382:42
2004 5 342:37
2005 6 554:39
2006 1 657:43
2007 0 725:19
2008 4 1488:17
2009 0 799:54
2010 1 900:27
2011 2 834:45
2012 4 840:54
2013 0 890:41
2014 0 864:15
2015 2 727:16
2016 1 659:29
2017 2 777:46
2018 0 766:48
2019 1 683:31
2020 1 839:09
2021 0 110:56
 
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