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 3 77:15
2006 3 32:05
2007 10 88:45
2008 9 100:00
2009 0 52:20
2010 7 48:05
2011 5 88:24
2012 3 36:20
2013 4 37:30
2014 0 30:40
2015 3 44:40
2016 17 163:00
2017 7 179:29
2018 25 380:50
2019 37 344:15
2020 24 447:51
 
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