Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 4 143:25
1982 2 100:04
1983 6 76:05
1984 0 157:55
1985 2 193:05
1986 5 180:40
1987 4 99:15
1988 0 216:00
1989 1 269:46
1990 2 262:45
1991 23 405:47
1992 1 645:00
1993 5 397:58
1994 16 286:00
1995 10 224:45
1996 23 328:00
1997 5 356:45
1998 26 339:30
1999 0 267:15
2000 0 261:30
2001 11 525:35
2002 0 526:15
2003 2 567:15
2004 4 455:05
2005 1 601:15
2006 20 389:55
2007 2 432:55
2008 0 525:55
2009 1 399:05
2010 1 249:40
2011 4 319:15
2012 2 231:35
2013 7 270:55
2014 3 291:35
2015 0 177:30
2016 3 230:15
2017 0 250:05
2018 0 318:16
2019 1 584:19
2020 3 587:17
2021 0 646:27
2022 8 477:05
 
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