Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 3 287:00
2002 4 316:00
2003 7 382:42
2004 0 342:37
2005 6 554:39
2006 10 657:43
2007 6 725:19
2008 20 1488:17
2009 5 799:54
2010 29 900:27
2011 6 834:45
2012 19 840:54
2013 23 890:41
2014 20 864:15
2015 3 727:16
2016 26 659:29
2017 4 777:46
2018 5 766:48
2019 6 683:31
2020 2 839:09
2021 2 921:00
 
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