Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 13 287:00
2002 1 316:00
2003 4 382:42
2004 28 342:37
2005 55 554:39
2006 23 657:43
2007 8 725:19
2008 15 1488:17
2009 4 799:54
2010 64 900:27
2011 10 834:45
2012 30 840:54
2013 4 890:41
2014 0 864:15
2015 0 727:16
2016 0 659:29
2017 6 777:46
2018 1 766:48
2019 1 683:31
2020 1 839:09
2021 16 921:00
 
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