Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 4 1:15
1972 0 0:30
1974 22 6:30
1977 6 2:30
1982 7 1:50
1983 1 13:30
1984 5 12:30
1985 16 20:15
1986 2 2:00
1987 11 3:30
1988 6 3:15
1989 14 9:30
1990 0 0:00
1991 0 4:30
1992 0 3:00
1993 0 6:46
1994 0 1:00
1995 6 9:45
1996 3 5:15
1997 11 6:15
1998 0 6:30
1999 0 4:15
2000 8 8:45
2001 36 24:00
2002 9 11:30
2003 1 6:14
2004 31 52:15
2005 205 370:45
2006 182 560:00
2007 137 568:00
2008 115 623:30
2009 126 346:10
2010 88 257:51
2011 121 379:30
2012 144 474:30
2013 125 449:30
2014 190 366:57
2015 61 241:57
2016 125 386:02
2017 147 309:56
2018 134 319:16
2019 135 243:15
2020 1 39:45
 
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