Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 0 1:15
1972 0 0:30
1974 3 6:30
1977 7 2:30
1982 0 1:50
1983 2 13:30
1984 1 12:30
1985 13 20:15
1986 0 2:00
1987 44 3:30
1988 0 3:15
1989 1 9:30
1990 0 0:00
1991 0 4:30
1992 0 3:00
1993 0 6:46
1994 0 1:00
1995 11 9:45
1996 0 5:15
1997 0 6:15
1998 30 6:30
1999 2 4:15
2000 9 8:45
2001 204 24:00
2002 0 11:30
2003 0 6:14
2004 43 52:15
2005 2330 370:45
2006 18100 560:00
2007 18743 568:00
2008 40426 623:30
2009 9392 346:10
2010 5311 257:51
2011 6829 379:30
2012 5559 474:30
2013 2054 449:30
2014 5877 366:57
2015 2718 241:57
2016 7451 386:02
2017 4911 309:56
2018 2302 319:16
2019 1854 243:15
2020 1115 129:30
 
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