Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 1 93:00
2001 11 287:00
2002 7 316:00
2003 26 382:42
2004 19 342:37
2005 24 554:39
2006 29 657:43
2007 44 725:19
2008 81 1488:17
2009 40 799:54
2010 40 900:27
2011 37 834:45
2012 38 840:54
2013 32 890:41
2014 48 864:15
2015 50 727:16
2016 86 659:29
2017 153 777:46
2018 99 766:48
2019 48 683:31
2020 129 839:09
 
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