Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 0 1:15
1972 0 0:30
1974 3 6:30
1977 0 2:30
1982 2 1:50
1983 32 13:30
1984 80 12:30
1985 36 20:15
1986 0 2:00
1987 37 3:30
1988 0 3:15
1989 2 9:30
1990 0 0:00
1991 0 4:30
1992 6 3:00
1993 200 6:46
1994 0 1:00
1995 6 9:45
1996 0 5:15
1997 10 6:15
1998 1 6:30
1999 90 4:15
2000 20 8:45
2001 78 24:00
2002 141 11:30
2003 0 6:14
2004 36 52:15
2005 1592 370:45
2006 851 560:00
2007 1502 568:00
2008 830 623:30
2009 1172 346:10
2010 646 257:51
2011 1117 379:30
2012 1106 474:30
2013 575 449:30
2014 1333 366:57
2015 2475 241:57
2016 683 386:02
2017 979 309:56
2018 2326 319:16
2019 1995 243:15
2020 17 39:45
 
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