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 4 382:42
2004 1 342:37
2005 4 554:39
2006 0 657:43
2007 4 725:19
2008 10 1488:17
2009 4 799:54
2010 19 900:27
2011 19 834:45
2012 3 840:54
2013 6 890:41
2014 4 864:15
2015 11 727:16
2016 5 659:29
2017 8 777:46
2018 46 766:48
2019 24 683:31
2020 33 839:09
2021 7 766:08
 
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