Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2000 2 93:00
2001 0 287:00
2002 1 316:00
2003 3 382:42
2004 5 342:37
2005 5 554:39
2006 20 657:43
2007 7 725:19
2008 27 1488:17
2009 11 799:54
2010 26 900:27
2011 25 834:45
2012 30 840:54
2013 35 890:41
2014 47 864:15
2015 31 727:16
2016 31 659:29
2017 29 777:46
2018 29 766:48
2019 16 683:31
2020 21 839:09
2021 3 758:38
 
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