Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1972 196 31:00
1973 104 18:15
1974 5 7:45
1975 142 18:30
1976 120 66:30
1977 237 23:45
1978 556 116:45
1979 1310 71:45
1980 5538 109:00
1981 839 78:00
1982 2515 39:00
1983 572 71:00
1984 118 30:15
1985 4607 98:00
1986 1072 41:30
1987 389 42:15
1988 21 55:00
1989 171 47:15
1990 88 33:00
1991 16 18:00
1992 200 28:30
1993 559 25:45
1994 213 40:00
1995 337 15:15
1996 0 5:00
1997 8 26:30
1998 0 20:00
1999 4 26:45
2000 116 27:30
2001 0 23:00
2002 50 26:55
2003 0 37:45
2004 189 30:10
2005 12 34:00
2006 6 41:33
2007 1143 83:14
2008 615 56:33
2009 541 76:07
2010 515 52:50
2011 467 80:30
2012 468 94:05
2013 775 66:27
2014 909 41:10
2015 1280 49:05
2016 642 19:00
2017 801 123:39
2018 1205 89:34
2019 328 98:07
2020 12951 108:43
2021 0 3:00
 
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