Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 4 93:00
2001 2 287:00
2002 0 316:00
2003 0 382:42
2004 61 342:37
2005 23 554:39
2006 4 657:43
2007 26 725:19
2008 369 1488:17
2009 10 799:54
2010 780 900:27
2011 9 834:45
2012 1002 840:54
2013 52 890:41
2014 277 864:15
2015 25 727:16
2016 17 659:29
2017 43 777:46
2018 14 766:48
2019 1742 683:31
2020 11 839:09
2021 2409 921:00
 
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