Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 8 93:00
2001 61 287:00
2002 134 316:00
2003 154 382:42
2004 286 342:37
2005 291 554:39
2006 388 657:43
2007 284 725:19
2008 457 1488:17
2009 308 799:54
2010 433 900:27
2011 531 834:45
2012 424 840:54
2013 351 890:41
2014 669 864:15
2015 483 727:16
2016 401 659:29
2017 379 777:46
2018 480 766:48
2019 503 683:31
2020 501 839:09
2021 323 921:00
 
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