Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2000 15 93:00
2001 12 287:00
2002 0 316:00
2003 11 382:42
2004 19 342:37
2005 72 554:39
2006 100 657:43
2007 129 725:19
2008 133 1488:17
2009 57 799:54
2010 103 900:27
2011 95 834:45
2012 202 840:54
2013 160 890:41
2014 235 864:15
2015 106 727:16
2016 18 659:29
2017 76 777:46
2018 70 766:48
2019 94 683:31
2020 51 839:09
2021 58 921:00
 
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