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 1 193:05
1986 3 180:40
1987 1 99:15
1988 1 216:00
1989 5 269:46
1990 25 262:45
1991 5 405:47
1992 154 645:00
1993 6 397:58
1994 27 286:00
1995 3 224:45
1996 0 325:15
1997 0 356:45
1998 3 339:30
1999 5 267:15
2000 5 261:30
2001 5 524:35
2002 6 526:15
2003 3 567:15
2004 61 455:05
2005 21 601:15
2006 6 389:55
2007 5 432:55
2008 20 525:55
2009 5 399:05
2010 0 249:40
2011 3 319:15
2012 5 231:35
2013 2 270:55
2014 21 291:35
2015 0 177:30
2016 11 230:15
2017 21 250:05
2018 9 318:16
2019 10 584:19
2020 23 587:17
2021 6 644:27
 
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