Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 3 1:15
1972 0 0:30
1974 137 6:30
1977 28 2:30
1982 0 1:50
1983 2 13:30
1984 37 12:30
1985 11 20:15
1986 0 2:00
1987 13 3:30
1988 250 3:15
1989 36 9:30
1990 0 0:00
1991 0 4:30
1992 0 3:00
1993 68 6:46
1994 0 1:00
1995 23 9:45
1996 25 5:15
1997 25 6:15
1998 0 6:30
1999 303 4:15
2000 6 8:45
2001 3003 24:00
2002 143 11:30
2003 73 6:14
2004 117 52:15
2005 8469 370:45
2006 26737 560:00
2007 28620 568:00
2008 30343 623:30
2009 14134 346:10
2010 6070 257:51
2011 13395 379:30
2012 13829 474:30
2013 13139 449:30
2014 8304 366:57
2015 7310 241:57
2016 11667 386:02
2017 9125 309:56
2018 5464 319:16
2019 7839 243:15
 
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