Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 8 93:00
2001 8 287:00
2002 11 316:00
2003 14 382:42
2004 11 342:37
2005 12 554:39
2006 95 657:43
2007 82 725:19
2008 20 1488:17
2009 85 799:54
2010 91 900:27
2011 27 834:45
2012 27 840:54
2013 70 890:41
2014 30 864:15
2015 56 727:16
2016 72 659:29
2017 50 777:46
2018 43 766:48
2019 397 683:31
2020 284 697:12
 
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