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 5 99:15
1988 0 216:00
1989 6 269:46
1990 15 262:45
1991 20 405:47
1992 107 645:00
1993 23 397:58
1994 91 286:00
1995 6 224:45
1996 9 325:15
1997 16 356:45
1998 3 339:30
1999 2 267:15
2000 1 261:30
2001 2 524:35
2002 8 526:15
2003 14 567:15
2004 3 455:05
2005 4 601:15
2006 1 389:55
2007 2 432:55
2008 3 525:55
2009 2 399:05
2010 65 249:40
2011 35 319:15
2012 3 231:35
2013 8 270:55
2014 1 291:35
2015 0 177:30
2016 1 230:15
2017 9 250:05
2018 0 318:16
2019 7 584:19
2020 13 587:17
2021 5 524:47
 
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