Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 39:30
1999 0 19:00
2001 127 594:30
2002 0 0:00
2005 1 77:15
2006 0 32:05
2007 0 88:45
2008 5 100:00
2009 0 52:20
2010 3 48:05
2011 0 88:24
2012 3 36:20
2013 1 37:30
2014 1 30:40
2015 0 44:40
2016 24 163:00
2017 11 179:29
2018 9 380:50
2019 6 344:15
2020 9 447:51
 
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