Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2000 70 93:00
2001 176 287:00
2002 141 316:00
2003 589 382:42
2004 227 342:37
2005 590 554:39
2006 1185 657:43
2007 1198 725:19
2008 919 1488:17
2009 341 799:54
2010 1106 900:27
2011 1865 834:45
2012 1350 840:54
2013 1107 890:41
2014 1120 864:15
2015 542 727:16
2016 270 659:29
2017 823 777:46
2018 1143 766:48
2019 1168 683:31
2020 3767 839:09
2021 1634 921:00
 
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