Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 12 93:00
2001 363 287:00
2002 382 316:00
2003 348 382:42
2004 912 342:37
2005 609 554:39
2006 687 657:43
2007 644 725:19
2008 1804 1488:17
2009 654 799:54
2010 723 900:27
2011 840 834:45
2012 665 840:54
2013 812 890:41
2014 368 864:15
2015 433 727:16
2016 1295 659:29
2017 921 777:46
2018 1569 766:48
2019 1250 683:31
2020 1109 697:12
 
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