Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 55 287:00
2002 36 316:00
2003 131 382:42
2004 152 342:37
2005 25 554:39
2006 235 657:43
2007 673 725:19
2008 417 1488:17
2009 772 799:54
2010 1082 900:27
2011 741 834:45
2012 1520 840:54
2013 1173 890:41
2014 1470 864:15
2015 2099 727:16
2016 1723 659:29
2017 283 777:46
2018 50 766:48
2019 2 683:31
2020 0 839:09
 
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