Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 39:30
1999 28 19:00
2001 981 594:30
2002 0 0:00
2005 1078 77:15
2006 781 32:05
2007 508 88:45
2008 1609 100:00
2009 1189 52:20
2010 68 48:05
2011 351 88:24
2012 0 36:20
2013 669 37:30
2014 184 30:40
2015 1315 44:40
2016 377 163:00
2017 2278 179:29
2018 9959 380:50
2019 12246 344:15
2020 16120 447:51
 
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