Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1971 430 1:15
1972 76 0:30
1974 3628 6:30
1977 673 2:30
1982 1365 1:50
1983 6637 13:30
1984 6351 12:30
1985 5531 20:15
1986 150 2:00
1987 2800 3:30
1988 15 3:15
1989 2085 9:30
1990 0 0:00
1991 275 4:30
1992 20 3:00
1993 140 6:46
1994 150 1:00
1995 1108 9:45
1996 1200 5:15
1997 830 6:15
1998 1225 6:30
1999 4150 4:15
2000 6800 8:45
2001 7540 24:00
2002 1615 11:30
2003 325 6:14
2004 5519 52:15
2005 36917 370:45
2006 31348 560:00
2007 19249 568:00
2008 58972 623:30
2009 10636 346:10
2010 41929 257:51
2011 51140 379:30
2012 56672 474:30
2013 44395 449:30
2014 101766 366:57
2015 16856 241:57
2016 37862 386:02
2017 67365 309:56
2018 119749 319:16
2019 36340 243:15
2020 0 14:00
 
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