Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 39:30
1999 0 19:00
2001 18 594:30
2002 0 0:00
2005 16 77:15
2006 9 32:05
2007 28 88:45
2008 16 100:00
2009 4 52:20
2010 15 48:05
2011 48 88:24
2012 8 36:20
2013 19 37:30
2014 5 30:40
2015 5 44:40
2016 62 163:00
2017 48 179:29
2018 308 380:50
2019 283 344:15
2020 391 447:51
 
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