Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 470 93:00
2001 1854 287:00
2002 651 316:00
2003 704 382:42
2004 817 342:37
2005 802 554:39
2006 1163 657:43
2007 2196 725:19
2008 6637 1488:17
2009 1877 799:54
2010 2776 900:27
2011 2417 834:45
2012 3329 840:54
2013 3467 890:41
2014 3635 864:15
2015 3219 727:16
2016 504 659:29
2017 4366 777:46
2018 3804 766:48
2019 2986 683:31
2020 3189 839:09
 
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