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 1 180:40
1987 6 99:15
1988 2 216:00
1989 21 269:46
1990 5 262:45
1991 16 405:47
1992 7 645:00
1993 5 397:58
1994 5 286:00
1995 2 224:45
1996 244 325:15
1997 75 356:45
1998 57 339:30
1999 1 267:15
2000 0 261:30
2001 0 524:35
2002 4 526:15
2003 65 567:15
2004 61 455:05
2005 66 601:15
2006 92 389:55
2007 23 432:55
2008 43 525:55
2009 47 399:05
2010 32 249:40
2011 129 319:15
2012 54 231:35
2013 9 270:55
2014 23 291:35
2015 3 177:30
2016 13 230:15
2017 19 250:05
2018 58 318:16
2019 93 584:19
2020 24 587:17
2021 37 539:42
 
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