Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 1 39:30
1999 0 19:00
2001 30 594:30
2002 0 0:00
2005 1 77:15
2006 0 32:05
2007 4 88:45
2008 0 100:00
2009 1 52:20
2010 0 48:05
2011 1 88:24
2012 0 36:20
2013 0 37:30
2014 0 30:40
2015 0 44:40
2016 0 163:00
2017 6 179:29
2018 58 380:50
2019 43 344:15
2020 44 447:51
 
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