Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1900 172 5:30
1980 0 2:00
1981 0 143:25
1982 0 100:04
1983 1982 76:05
1984 2258 157:55
1985 4364 193:05
1986 2773 180:40
1987 3169 99:15
1988 5641 216:00
1989 5124 269:46
1990 3949 262:45
1991 5435 405:47
1992 15512 645:00
1993 6826 397:58
1994 16724 286:00
1995 9532 224:45
1996 6492 325:15
1997 7106 356:45
1998 17920 339:30
1999 9488 267:15
2000 9098 261:30
2001 17998 524:35
2002 3019 526:15
2003 3657 567:15
2004 4198 455:05
2005 5015 601:15
2006 3745 389:55
2007 3809 432:55
2008 10931 525:55
2009 5287 399:05
2010 1674 249:40
2011 10092 319:15
2012 8520 231:35
2013 1956 270:55
2014 4875 291:35
2015 1345 177:30
2016 6250 230:15
2017 5639 250:05
2018 6431 318:16
2019 7103 584:19
2020 6587 587:17
2021 6501 539:42
 
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