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 3 76:05
1984 2 157:55
1985 1 193:05
1986 0 180:40
1987 0 99:15
1988 2 216:00
1989 78 269:46
1990 550 262:45
1991 0 405:47
1992 18 645:00
1993 26 397:58
1994 18 286:00
1995 0 224:45
1996 2 325:15
1997 17 356:45
1998 15 339:30
1999 1 267:15
2000 239 261:30
2001 13 524:35
2002 102 526:15
2003 9 567:15
2004 3 455:05
2005 6 601:15
2006 1 389:55
2007 903 432:55
2008 220 525:55
2009 2 399:05
2010 0 249:40
2011 68 319:15
2012 469 231:35
2013 0 270:55
2014 1 291:35
2015 1 177:30
2016 0 230:15
2017 2 250:05
2018 0 318:16
2019 1 584:19
2020 3 587:17
2021 1 563:27
 
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