Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 299 143:25
1982 915 100:04
1983 956 76:05
1984 1030 157:55
1985 1055 193:05
1986 837 180:40
1987 642 99:15
1988 725 216:00
1989 1654 269:46
1990 1684 262:45
1991 1480 405:47
1992 2183 645:00
1993 3443 397:58
1994 2186 286:00
1995 1587 224:45
1996 2150 325:15
1997 1968 356:45
1998 3610 339:30
1999 5177 267:15
2000 1986 261:30
2001 13298 524:35
2002 3428 526:15
2003 19684 567:15
2004 6218 455:05
2005 9122 601:15
2006 8268 389:55
2007 8314 432:55
2008 7241 525:55
2009 5222 399:05
2010 9855 249:40
2011 14761 319:15
2012 6776 231:35
2013 19009 270:55
2014 3969 291:35
2015 1613 177:30
2016 3475 230:15
2017 3833 250:05
2018 9546 318:16
2019 6275 584:19
2020 11951 587:17
2021 7658 539:42
 
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