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 1 216:00
1989 10 269:46
1990 5 262:45
1991 10 405:47
1992 73 645:00
1993 77 397:58
1994 50 286:00
1995 3 224:45
1996 72 325:15
1997 55 356:45
1998 95 339:30
1999 83 267:15
2000 55 261:30
2001 56 524:35
2002 40 526:15
2003 107 567:15
2004 57 455:05
2005 53 601:15
2006 31 389:55
2007 36 432:55
2008 9 525:55
2009 25 399:05
2010 9 249:40
2011 18 319:15
2012 13 231:35
2013 12 270:55
2014 14 291:35
2015 3 177:30
2016 5 230:15
2017 8 250:05
2018 2 318:16
2019 2 584:19
2020 20 587:17
2021 3 644:27
 
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