Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1983 5 9:15
1984 5 27:20
1985 15 29:00
1986 2 69:40
1987 75 47:00
1988 0 17:30
1989 5 45:00
1990 9 35:30
1991 25 48:28
1992 50 45:00
1993 17 51:30
1994 3 27:30
1995 51 50:00
1996 30 49:15
1997 39 34:50
1998 13 50:00
1999 26 57:20
2000 18 42:30
2001 47 69:35
2002 131 76:40
2003 146 108:30
2004 65 111:45
2005 264 145:21
2006 150 152:17
2007 1041 187:59
2008 340 132:42
2009 61 75:32
2010 847 236:16
2011 773 281:19
2012 722 394:00
2013 194 408:08
2014 408 481:30
2015 206 400:00
2016 165 467:00
2017 357 490:30
2018 384 442:30
2019 742 431:54
2020 1051 451:00
2021 1155 298:00
 
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