Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 1 287:00
2002 0 316:00
2003 4 382:42
2004 0 342:37
2005 1 554:39
2006 1 657:43
2007 108 725:19
2008 220 1488:17
2009 71 799:54
2010 70 900:27
2011 300 834:45
2012 93 840:54
2013 107 890:41
2014 101 864:15
2015 189 727:16
2016 67 659:29
2017 216 777:46
2018 245 766:48
2019 194 683:31
2020 980 839:09
2021 1140 921:00
 
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