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 2 382:42
2004 0 342:37
2005 2 554:39
2006 2 657:43
2007 2 725:19
2008 1 1488:17
2009 0 799:54
2010 0 900:27
2011 1 834:45
2012 3 840:54
2013 1 890:41
2014 0 864:15
2015 0 727:16
2016 1 659:29
2017 4 777:46
2018 6 766:48
2019 2 683:31
2020 3 652:04
 
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