Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 15 66:45
1998 3 46:00
1999 3 79:15
2000 8 114:15
2001 32 119:45
2002 52 311:15
2003 176 433:15
2004 172 539:15
2005 225 741:30
2006 309 671:30
2007 132 742:30
2008 211 700:00
2009 195 629:45
2010 136 570:15
2011 92 520:15
2012 151 543:15
2013 151 410:30
2014 240 500:15
2015 122 683:45
2016 166 688:45
2017 275 671:00
2018 117 739:00
2019 29 548:00
 
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