Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 46 93:00
2001 105 287:00
2002 52 316:00
2003 24 382:42
2004 54 342:37
2005 77 554:39
2006 97 657:43
2007 153 725:19
2008 478 1488:17
2009 92 799:54
2010 112 900:27
2011 134 834:45
2012 141 840:54
2013 83 890:41
2014 371 864:15
2015 170 727:16
2016 65 659:29
2017 223 777:46
2018 397 766:48
2019 314 683:31
2020 303 839:09
2021 871 921:00
 
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