Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 1 93:00
2001 13 287:00
2002 8 316:00
2003 12 382:42
2004 18 342:37
2005 18 554:39
2006 17 657:43
2007 55 725:19
2008 45 1488:17
2009 9 799:54
2010 27 900:27
2011 14 834:45
2012 22 840:54
2013 14 890:41
2014 30 864:15
2015 25 727:16
2016 19 659:29
2017 11 777:46
2018 23 766:48
2019 14 683:31
2020 10 652:04
 
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