Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 2 93:00
2001 7 287:00
2002 3 316:00
2003 8 382:42
2004 10 342:37
2005 28 554:39
2006 36 657:43
2007 22 725:19
2008 58 1488:17
2009 25 799:54
2010 36 900:27
2011 37 834:45
2012 18 840:54
2013 29 890:41
2014 26 864:15
2015 30 727:16
2016 13 659:29
2017 17 777:46
2018 36 766:48
2019 22 683:31
2020 12 697:12
 
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