Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 66:45
1998 0 46:00
1999 69 79:15
2000 6 114:15
2001 0 119:45
2002 53 311:15
2003 119 433:15
2004 141 539:15
2005 390 741:30
2006 227 671:30
2007 374 742:30
2008 167 700:00
2009 318 629:45
2010 898 570:15
2011 56 520:15
2012 181 543:15
2013 297 410:30
2014 289 500:15
2015 1049 683:45
2016 1251 688:45
2017 748 671:00
2018 156 739:00
2019 154 721:15
 
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