Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 10 39:30
1999 26 19:00
2001 577 594:30
2002 0 0:00
2005 81 77:15
2006 12 32:05
2007 23 88:45
2008 4 100:00
2009 16 52:20
2010 34 48:05
2011 10 88:24
2012 6 36:20
2013 1 37:30
2014 8 30:40
2015 30 44:40
2016 29 171:15
2017 75 179:29
2018 200 380:50
2019 160 344:15
2020 176 358:46
 
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