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 1 1:50
1983 622 13:30
1984 1 12:30
1985 11 20:15
1986 3 2:00
1987 2 3:30
1988 0 3:15
1989 0 9:30
1990 0 0:00
1991 0 4:30
1992 0 3:00
1993 55 6:46
1994 0 1:00
1995 1 9:45
1996 35 5:15
1997 24 6:15
1998 13 6:30
1999 0 4:15
2000 1 8:45
2001 25 24:00
2002 180 11:30
2003 0 6:14
2004 655 52:15
2005 1615 370:45
2006 622 560:00
2007 536 568:00
2008 882 623:30
2009 595 346:10
2010 743 257:51
2011 94 379:30
2012 493 474:30
2013 4767 449:30
2014 1173 366:57
2015 392 241:57
2016 2237 386:02
2017 925 309:56
2018 491 319:16
2019 781 243:15
2020 1 9:00
 
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