Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites
Don't use roostmigration

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 0 554:39
2006 0 657:43
2007 0 725:19
2008 0 1488:17
2009 1 799:54
2010 0 900:27
2011 0 834:45
2012 8 840:54
2013 0 890:41
2014 0 864:15
2015 0 727:16
2016 0 659:29
2017 0 777:46
2018 0 766:48
2019 0 683:31
2020 0 839:09
2021 5 921:00
2022 0 853:07
 
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