Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites
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Year Totals Observation hours
2000 5 93:00
2001 70 287:00
2002 76 316:00
2003 153 382:42
2004 594 342:37
2005 273 554:39
2006 532 657:43
2007 371 725:19
2008 386 1488:17
2009 171 799:54
2010 216 900:27
2011 369 834:45
2012 217 840:54
2013 669 890:41
2014 490 864:15
2015 208 727:16
2016 158 659:29
2017 117 777:46
2018 275 766:48
2019 181 683:31
2020 175 839:09
2021 159 921:00
2022 189 853:07
 
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