Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 3 93:00
2001 53 287:00
2002 14 316:00
2003 34 382:42
2004 8 342:37
2005 37 554:39
2006 8 657:43
2007 111 725:19
2008 181 1488:17
2009 21 799:54
2010 60 900:27
2011 57 834:45
2012 91 840:54
2013 55 890:41
2014 186 864:15
2015 55 727:16
2016 221 659:29
2017 56 777:46
2018 206 766:48
2019 85 683:31
2020 168 839:09
 
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