Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 6 93:00
2001 7 287:00
2002 3 316:00
2003 7 382:42
2004 5 342:37
2005 19 554:39
2006 9 657:43
2007 25 725:19
2008 23 1488:17
2009 20 799:54
2010 15 900:27
2011 29 834:45
2012 17 840:54
2013 34 890:41
2014 56 864:15
2015 16 727:16
2016 27 659:29
2017 22 777:46
2018 13 766:48
2019 14 683:31
2020 3 648:57
 
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