Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 0 287:00
2002 0 316:00
2003 0 382:42
2004 0 342:37
2005 1 554:39
2006 1 657:43
2007 1 725:19
2008 0 1488:17
2009 1 799:54
2010 0 900:27
2011 0 834:45
2012 1 840:54
2013 1 890:41
2014 0 864:15
2015 0 727:16
2016 0 659:29
2017 1 777:46
2018 0 766:48
2019 0 683:31
2020 0 697:12
 
Partners