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 1 554:39
2006 1 657:43
2007 1 725:19
2008 1 1488:17
2009 0 799:54
2010 2 900:27
2011 0 834:45
2012 1 840:54
2013 0 890:41
2014 1 864:15
2015 0 727:16
2016 2 659:29
2017 1 777:46
2018 0 766:48
2019 0 683:31
2020 1 697:12
 
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