Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 1 287:00
2002 2 316:00
2003 0 382:42
2004 3 342:37
2005 3 554:39
2006 6 657:43
2007 4 725:19
2008 29 1488:17
2009 14 799:54
2010 24 900:27
2011 12 834:45
2012 11 840:54
2013 9 890:41
2014 12 864:15
2015 5 727:16
2016 12 659:29
2017 18 777:46
2018 25 766:48
2019 9 683:31
2020 20 697:12
 
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