Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 0 287:00
2002 2 316:00
2003 0 382:42
2004 0 342:37
2005 2 554:39
2006 8 657:43
2007 2 725:19
2008 25 1488:17
2009 8 799:54
2010 6 900:27
2011 5 834:45
2012 14 840:54
2013 6 890:41
2014 10 864:15
2015 7 727:16
2016 4 659:29
2017 10 777:46
2018 13 766:48
2019 18 683:31
2020 26 648:57
 
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