Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 3 1:15
1972 0 0:30
1974 5 6:30
1977 3 2:30
1982 32 1:50
1983 14 13:30
1984 22 12:30
1985 48 20:15
1986 3 2:00
1987 16 3:30
1988 5 3:15
1989 36 9:30
1990 0 0:00
1991 10 4:30
1992 0 3:00
1993 3 6:46
1994 0 1:00
1995 9 9:45
1996 0 5:15
1997 12 6:15
1998 10 6:30
1999 0 4:15
2000 6 8:45
2001 17 24:00
2002 0 11:30
2003 0 6:14
2004 46 52:15
2005 1155 370:45
2006 537 560:00
2007 151 568:00
2008 420 623:30
2009 132 346:10
2010 171 257:51
2011 382 379:30
2012 406 474:30
2013 457 449:30
2014 759 366:57
2015 148 241:57
2016 252 386:02
2017 461 309:56
2018 190 319:16
2019 163 243:15
 
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