Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 38 1:15
1972 0 0:30
1974 155 6:30
1977 758 2:30
1982 4 1:50
1983 101 13:30
1984 187 12:30
1985 283 20:15
1986 0 2:00
1987 110 3:30
1988 38 3:15
1989 169 9:30
1990 0 0:00
1991 0 4:30
1992 0 3:00
1993 30 6:46
1994 0 1:00
1995 95 9:45
1996 40 5:15
1997 0 6:15
1998 0 6:30
1999 60 4:15
2000 75 8:45
2001 188 24:00
2002 5 11:30
2003 0 6:14
2004 31 52:15
2005 1042 370:45
2006 1397 560:00
2007 1356 568:00
2008 2318 623:30
2009 1551 346:10
2010 801 257:51
2011 2206 379:30
2012 1500 474:30
2013 1357 449:30
2014 1183 366:57
2015 1301 241:57
2016 723 386:02
2017 941 309:56
2018 1717 319:16
2019 528 243:15
2020 128 138:00
 
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