Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 1 143:25
1982 2 100:04
1983 0 76:05
1984 0 157:55
1985 1 193:05
1986 6 180:40
1987 2 99:15
1988 4 216:00
1989 4 269:46
1990 3 262:45
1991 4 405:47
1992 5 645:00
1993 5 397:58
1994 9 286:00
1995 2 224:45
1996 9 328:00
1997 4 356:45
1998 7 339:30
1999 4 267:15
2000 3 261:30
2001 18 524:35
2002 12 526:15
2003 13 567:15
2004 4 455:05
2005 14 601:15
2006 5 389:55
2007 7 432:55
2008 1 525:55
2009 4 399:05
2010 14 249:40
2011 4 319:15
2012 4 231:35
2013 5 270:55
2014 2 291:35
2015 1 177:30
2016 1 230:15
2017 2 250:05
2018 4 318:16
2019 4 584:19
2020 0 587:17
2021 3 646:27
 
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