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 4 100:04
1983 4 76:05
1984 18 157:55
1985 1 193:05
1986 23 180:40
1987 16 99:15
1988 36 216:00
1989 17 269:46
1990 6 262:45
1991 155 405:47
1992 16 645:00
1993 29 397:58
1994 13 286:00
1995 28 224:45
1996 25 328:00
1997 30 356:45
1998 12 339:30
1999 12 267:15
2000 12 261:30
2001 51 525:35
2002 50 526:15
2003 19 567:15
2004 27 455:05
2005 27 601:15
2006 33 389:55
2007 20 432:55
2008 17 525:55
2009 24 399:05
2010 2 249:40
2011 16 319:15
2012 16 231:35
2013 57 270:55
2014 8 291:35
2015 5 177:30
2016 16 230:15
2017 18 250:05
2018 27 318:16
2019 26 584:19
2020 41 587:17
2021 32 646:27
2022 28 477:05
 
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