Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 2 143:25
1982 0 100:04
1983 720 76:05
1984 0 157:55
1985 0 193:05
1986 100 180:40
1987 0 99:15
1988 10 216:00
1989 1001 269:46
1990 662 262:45
1991 883 405:47
1992 913 645:00
1993 2791 397:58
1994 2197 286:00
1995 10 224:45
1996 4865 325:15
1997 895 356:45
1998 4835 339:30
1999 1977 267:15
2000 16 261:30
2001 8836 524:35
2002 1165 526:15
2003 11653 567:15
2004 2670 455:05
2005 5435 601:15
2006 3373 389:55
2007 622 432:55
2008 747 525:55
2009 866 399:05
2010 5108 249:40
2011 1362 319:15
2012 404 231:35
2013 4372 270:55
2014 4620 291:35
2015 745 177:30
2016 240 230:15
2017 1020 250:05
2018 1867 318:16
2019 3463 584:19
2020 2913 587:17
2021 5860 644:27
 
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