Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 5 143:25
1982 22 100:04
1983 0 76:05
1984 0 157:55
1985 0 193:05
1986 0 180:40
1987 0 99:15
1988 0 216:00
1989 0 269:46
1990 5 262:45
1991 7 405:47
1992 12 645:00
1993 0 397:58
1994 22 286:00
1995 1 224:45
1996 0 325:15
1997 4 356:45
1998 2 339:30
1999 2 267:15
2000 9 261:30
2001 25 524:35
2002 8 526:15
2003 0 567:15
2004 6 455:05
2005 8 601:15
2006 9 389:55
2007 13 432:55
2008 19 525:55
2009 10 399:05
2010 2 249:40
2011 49 319:15
2012 7 231:35
2013 5 270:55
2014 0 291:35
2015 0 177:30
2016 5 230:15
2017 6 250:05
2018 3 318:16
2019 2 584:19
2020 6 587:17
2021 4 644:27
 
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