Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 28 39:30
1999 5 19:00
2001 85 594:30
2002 0 0:00
2005 29 77:15
2006 16 32:05
2007 12 88:45
2008 257 100:00
2009 1 52:20
2010 4 48:05
2011 40 88:24
2012 19 36:20
2013 6 37:30
2014 14 30:40
2015 22 44:40
2016 107 163:00
2017 138 179:29
2018 1104 380:50
2019 165 344:15
2020 1067 447:51
 
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