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 3 382:42
2004 1 342:37
2005 4 554:39
2006 0 657:43
2007 5 725:19
2008 25 1488:17
2009 2 799:54
2010 7 900:27
2011 0 834:45
2012 2 840:54
2013 3 890:41
2014 3 864:15
2015 7 727:16
2016 3 659:29
2017 19 777:46
2018 7 766:48
2019 10 683:31
2020 5 839:09
2021 0 88:11
 
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