Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 15 143:25
1982 0 100:04
1983 0 76:05
1984 0 157:55
1985 50 193:05
1986 0 180:40
1987 0 99:15
1988 91 216:00
1989 204 269:46
1990 1100 262:45
1991 5954 405:47
1992 3346 645:00
1993 865 397:58
1994 1268 286:00
1995 1084 224:45
1996 0 328:00
1997 314 356:45
1998 0 339:30
1999 0 267:15
2000 0 261:30
2001 0 525:35
2002 371 526:15
2003 1 567:15
2004 0 455:05
2005 8331 601:15
2006 3434 389:55
2007 6940 432:55
2008 8050 525:55
2009 6788 399:05
2010 1644 249:40
2011 576 319:15
2012 18 231:35
2013 9500 270:55
2014 2620 291:35
2015 3690 177:30
2016 1741 230:15
2017 5748 250:05
2018 4166 318:16
2019 11214 584:19
2020 16690 587:17
2021 5024 646:27
2022 10683 485:50
 
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