Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 48 93:00
2001 457 287:00
2002 177 316:00
2003 191 382:42
2004 307 342:37
2005 236 554:39
2006 98 657:43
2007 433 725:19
2008 257 1488:17
2009 111 799:54
2010 548 900:27
2011 366 834:45
2012 476 840:54
2013 353 890:41
2014 231 864:15
2015 149 727:16
2016 95 659:29
2017 68 777:46
2018 47 766:48
2019 68 683:31
2020 26 839:09
 
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