Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 2 39:30
1999 66 19:00
2001 887 594:30
2002 0 0:00
2005 60 77:15
2006 44 32:05
2007 50 88:45
2008 81 100:00
2009 37 52:20
2010 108 48:05
2011 101 88:24
2012 42 36:20
2013 81 37:30
2014 62 30:40
2015 96 44:40
2016 18 171:15
2017 466 179:29
2018 604 380:50
2019 937 344:15
2020 1064 367:01
 
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