Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 6 93:00
2001 17 287:00
2002 9 316:00
2003 17 382:42
2004 6 342:37
2005 15 554:39
2006 19 657:43
2007 20 725:19
2008 59 1488:17
2009 13 799:54
2010 23 900:27
2011 27 834:45
2012 22 840:54
2013 23 890:41
2014 16 864:15
2015 22 727:16
2016 15 659:29
2017 1 777:46
2018 24 766:48
2019 20 683:31
2020 28 839:09
 
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