Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2000 385 93:00
2001 622 287:00
2002 319 316:00
2003 783 382:42
2004 733 342:37
2005 555 554:39
2006 1042 657:43
2007 1215 725:19
2008 2034 1488:17
2009 2547 799:54
2010 2860 900:27
2011 1327 834:45
2012 2466 840:54
2013 1405 890:41
2014 1586 864:15
2015 622 727:16
2016 1247 659:29
2017 1208 777:46
2018 1074 766:48
2019 1020 683:31
2020 636 697:12
 
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