Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1983 21 9:15
1984 35 27:20
1985 144 29:00
1986 114 69:40
1987 262 47:00
1988 20 17:30
1989 56 45:00
1990 99 35:00
1991 56 48:28
1992 63 45:00
1993 76 51:30
1994 50 27:30
1995 110 50:00
1996 66 49:15
1997 76 34:50
1998 109 50:00
1999 129 57:20
2000 140 42:30
2001 249 69:35
2002 220 76:40
2003 198 108:30
2004 204 111:45
2005 254 145:21
2006 355 152:17
2007 234 187:59
2008 181 132:42
2009 74 75:32
2010 462 236:16
2011 609 281:19
2012 557 394:00
2013 448 408:08
2014 656 481:30
2015 388 400:00
2016 489 467:00
2017 497 490:30
2018 779 442:30
2019 1505 431:54
2020 1269 451:00
 
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