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 0 216:00
1989 15 269:46
1990 1 262:45
1991 13 405:47
1992 36 645:00
1993 0 397:58
1994 53 286:00
1995 0 224:45
1996 240 328:00
1997 228 356:45
1998 236 339:30
1999 19 267:15
2000 0 261:30
2001 958 524:35
2002 272 526:15
2003 2107 567:15
2004 1462 455:05
2005 120 601:15
2006 133 389:55
2007 228 432:55
2008 7 525:55
2009 0 399:05
2010 88 249:40
2011 124 319:15
2012 12 231:35
2013 0 270:55
2014 29 291:35
2015 0 177:30
2016 0 230:15
2017 0 250:05
2018 0 318:16
2019 487 584:19
2020 34 587:17
2021 1830 646:27
 
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