Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2000 0 93:00
2001 5 287:00
2002 11 316:00
2003 22 382:42
2004 53 342:37
2005 165 554:39
2006 172 657:43
2007 140 725:19
2008 361 1488:17
2009 178 799:54
2010 307 900:27
2011 252 834:45
2012 232 840:54
2013 118 890:41
2014 238 864:15
2015 99 727:16
2016 188 659:29
2017 232 777:46
2018 211 766:48
2019 188 683:31
2020 173 839:09
 
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