Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 1 5:30
1980 18 2:00
1981 149 143:25
1982 370 100:04
1983 455 76:05
1984 1196 157:55
1985 434 193:05
1986 7061 180:40
1987 110 99:15
1988 471 216:00
1989 2834 269:46
1990 1170 262:45
1991 1941 405:47
1992 2281 645:00
1993 9243 397:58
1994 4360 286:00
1995 4313 224:45
1996 6017 328:00
1997 1168 356:45
1998 1134 339:30
1999 5055 267:15
2000 588 261:30
2001 3143 525:35
2002 462 526:15
2003 6239 567:15
2004 699 455:05
2005 2821 601:15
2006 687 389:55
2007 4033 432:55
2008 976 525:55
2009 1972 399:05
2010 1292 249:40
2011 3354 319:15
2012 665 231:35
2013 7849 270:55
2014 4846 291:35
2015 931 177:30
2016 1018 230:15
2017 1160 250:05
2018 1183 318:16
2019 4256 584:19
2020 2263 587:17
2021 15659 646:27
2022 2680 477:05
 
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