Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 39:30
1999 0 10:00
2001 1 594:30
2002 0 0:00
2005 0 77:15
2006 0 32:05
2007 1 88:45
2008 0 100:00
2009 0 52:20
2010 0 48:05
2011 3 88:24
2012 5 36:20
2013 0 37:30
2014 0 30:40
2015 0 44:40
2016 1 171:15
2017 4 179:29
2018 0 380:50
2019 1 344:15
 
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