Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 2 1:15
1972 0 0:30
1974 4 6:30
1977 25 2:30
1982 5 1:50
1983 80 13:30
1984 57 12:30
1985 102 20:15
1986 0 2:00
1987 54 3:30
1988 0 3:15
1989 14 9:30
1990 0 0:00
1991 0 4:30
1992 0 3:00
1993 5 6:46
1994 0 1:00
1995 36 9:45
1996 21 5:15
1997 17 6:15
1998 11 6:30
1999 22 4:15
2000 47 8:45
2001 93 24:00
2002 8 11:30
2003 0 6:14
2004 29 52:15
2005 616 370:45
2006 716 560:00
2007 359 568:00
2008 694 623:30
2009 408 346:10
2010 632 257:51
2011 718 379:30
2012 965 474:30
2013 880 449:30
2014 1045 366:57
2015 484 241:57
2016 426 386:02
2017 813 309:56
2018 668 319:16
2019 785 243:15
2020 0 9:00
 
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