Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1971 0 1:15
1972 0 0:30
1974 1 6:30
1977 0 2:30
1982 1 1:50
1983 6 13:30
1984 31 12:30
1985 46 20:15
1986 4 2:00
1987 0 3:30
1988 2 3:15
1989 17 9:30
1990 0 0:00
1991 13 4:30
1992 7 3:00
1993 10 6:46
1994 0 1:00
1995 29 9:45
1996 23 5:15
1997 2 6:15
1998 6 6:30
1999 0 4:15
2000 25 8:45
2001 72 24:00
2002 10 11:30
2003 3 6:14
2004 172 52:15
2005 489 370:45
2006 530 560:00
2007 419 568:00
2008 738 623:30
2009 200 346:10
2010 554 257:51
2011 876 379:30
2012 578 474:30
2013 247 449:30
2014 281 366:57
2015 148 241:57
2016 216 386:02
2017 130 309:56
2018 113 319:16
2019 86 243:15
2020 784 304:06
2021 381 186:53
 
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