Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 0 143:25
1982 0 100:04
1983 0 76:05
1984 0 157:55
1985 0 193:05
1986 0 180:40
1987 0 99:15
1988 0 216:00
1989 0 269:46
1990 0 262:45
1991 0 405:47
1992 1 645:00
1993 1 397:58
1994 11 286:00
1995 2 224:45
1996 2 328:00
1997 3 356:45
1998 9 339:30
1999 10 267:15
2000 57 261:30
2001 64 525:35
2002 87 526:15
2003 36 567:15
2004 82 455:05
2005 110 601:15
2006 75 389:55
2007 164 432:55
2008 139 525:55
2009 27 399:05
2010 24 249:40
2011 63 319:15
2012 36 231:35
2013 25 270:55
2014 75 291:35
2015 23 177:30
2016 30 230:15
2017 38 250:05
2018 35 318:16
2019 61 584:19
2020 170 587:17
2021 166 646:27
2022 54 485:50
 
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