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 2 216:00
1989 4 269:46
1990 5 262:45
1991 8 405:47
1992 10 645:00
1993 22 397:58
1994 19 286:00
1995 17 224:45
1996 9 325:15
1997 13 356:45
1998 25 339:30
1999 5 267:15
2000 20 261:30
2001 12 524:35
2002 3 526:15
2003 8 567:15
2004 22 455:05
2005 6 601:15
2006 5 389:55
2007 1 432:55
2008 25 525:55
2009 7 399:05
2010 5 249:40
2011 8 319:15
2012 3 231:35
2013 1 270:55
2014 5 291:35
2015 0 177:30
2016 0 230:15
2017 1 250:05
2018 3 318:16
2019 4 584:19
2020 0 587:17
2021 6 539:42
 
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