Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

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