Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 0 287:00
2002 0 316:00
2003 1 382:42
2004 4 342:37
2005 0 554:39
2006 3 657:43
2007 12 725:19
2008 35 1488:17
2009 10 799:54
2010 30 900:27
2011 31 834:45
2012 62 840:54
2013 45 890:41
2014 96 864:15
2015 75 727:16
2016 40 659:29
2017 93 777:46
2018 71 766:48
2019 90 683:31
2020 91 839:09
2021 100 921:00
 
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