Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 31 93:00
2001 1272 287:00
2002 104 316:00
2003 232 382:42
2004 104 342:37
2005 426 554:39
2006 824 657:43
2007 698 725:19
2008 2587 1488:17
2009 492 799:54
2010 1228 900:27
2011 717 834:45
2012 532 840:54
2013 329 890:41
2014 1222 864:15
2015 477 727:16
2016 342 659:29
2017 901 777:46
2018 2926 766:48
2019 1295 683:31
2020 314 839:09
 
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