Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2000 675 93:00
2001 6243 287:00
2002 6620 316:00
2003 15192 382:42
2004 6244 342:37
2005 28181 554:39
2006 20211 657:43
2007 46161 725:19
2008 52987 1488:17
2009 23799 799:54
2010 27757 900:27
2011 22544 834:45
2012 33619 840:54
2013 33498 890:41
2014 194323 864:15
2015 32105 727:16
2016 14585 659:29
2017 31462 777:46
2018 140246 766:48
2019 28459 683:31
2020 73730 839:09
2021 199060 921:00
 
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