Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 3 39:30
1999 1 19:00
2001 18 594:30
2002 0 0:00
2005 1 77:15
2006 0 32:05
2007 1 88:45
2008 2 100:00
2009 0 52:20
2010 0 48:05
2011 0 88:24
2012 2 36:20
2013 1 37:30
2014 0 30:40
2015 2 44:40
2016 2 163:00
2017 1 179:29
2018 4 380:50
2019 9 344:15
2020 3 447:51
 
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