Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2000 3 93:00
2001 8 287:00
2002 5 316:00
2003 8 382:42
2004 6 342:37
2005 28 554:39
2006 57 657:43
2007 21 725:19
2008 116 1488:17
2009 43 799:54
2010 75 900:27
2011 69 834:45
2012 48 840:54
2013 42 890:41
2014 42 864:15
2015 35 727:16
2016 55 659:29
2017 82 777:46
2018 97 766:48
2019 51 683:31
2020 101 697:12
 
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