Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 50 5:30
1980 0 2:00
1981 305 143:25
1982 0 100:04
1983 0 76:05
1984 0 157:55
1985 3253 193:05
1986 2379 180:40
1987 511 99:15
1988 608 216:00
1989 6362 269:46
1990 14410 262:45
1991 12466 405:47
1992 14518 645:00
1993 15734 397:58
1994 6223 286:00
1995 6270 224:45
1996 0 325:15
1997 6240 356:45
1998 1837 339:30
1999 0 267:15
2000 0 261:30
2001 18000 524:35
2002 1701 526:15
2003 0 567:15
2004 7500 455:05
2005 25931 601:15
2006 25808 389:55
2007 11754 432:55
2008 16592 525:55
2009 18748 399:05
2010 5265 249:40
2011 13987 319:15
2012 8363 231:35
2013 70513 270:55
2014 13642 291:35
2015 3840 177:30
2016 9838 230:15
2017 12514 250:05
2018 20075 318:16
2019 17687 584:19
2020 21034 587:17
2021 8207 539:42
 
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