Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 0 1:15
1972 0 0:30
1974 0 6:30
1977 0 2:30
1982 0 1:50
1983 1 13:30
1984 1 12:30
1985 0 20:15
1986 0 2:00
1987 0 3:30
1988 0 3:15
1989 0 9:30
1990 0 0:00
1991 0 4:30
1992 0 3:00
1993 1 6:46
1994 0 1:00
1995 0 9:45
1996 3 5:15
1997 0 6:15
1998 0 6:30
1999 0 4:15
2000 0 8:45
2001 1 24:00
2002 1 11:30
2003 0 6:14
2004 1 52:15
2005 15 370:45
2006 10 560:00
2007 10 568:00
2008 15 623:30
2009 3 346:10
2010 6 257:51
2011 26 379:30
2012 5 474:30
2013 2 449:30
2014 5 366:57
2015 3 241:57
2016 4 386:02
2017 1 309:56
2018 5 319:16
2019 2 243:15
 
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