Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 1 1:15
1972 0 0:30
1974 4 6:30
1977 1 2:30
1982 1 1:50
1983 9 13:30
1984 18 12:30
1985 32 20:15
1986 2 2:00
1987 0 3:30
1988 2 3:15
1989 13 9:30
1990 0 0:00
1991 6 4:30
1992 3 3:00
1993 8 6:46
1994 0 1:00
1995 18 9:45
1996 24 5:15
1997 6 6:15
1998 11 6:30
1999 4 4:15
2000 7 8:45
2001 29 24:00
2002 15 11:30
2003 2 6:14
2004 85 52:15
2005 523 370:45
2006 691 560:00
2007 759 568:00
2008 929 623:30
2009 282 346:10
2010 378 257:51
2011 423 379:30
2012 352 474:30
2013 264 449:30
2014 303 366:57
2015 115 241:57
2016 217 386:02
2017 142 309:56
2018 166 319:16
2019 121 243:15
2020 146 233:53
 
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