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 1 100:04
1983 1 76:05
1984 0 157:55
1985 6 193:05
1986 37 180:40
1987 1 99:15
1988 10 216:00
1989 76 269:46
1990 99 262:45
1991 104 405:47
1992 303 645:00
1993 203 397:58
1994 93 286:00
1995 17 224:45
1996 328 325:15
1997 126 356:45
1998 108 339:30
1999 12 267:15
2000 13 261:30
2001 99 524:35
2002 11 526:15
2003 125 567:15
2004 60 455:05
2005 88 601:15
2006 52 389:55
2007 21 432:55
2008 31 525:55
2009 28 399:05
2010 25 249:40
2011 60 319:15
2012 14 231:35
2013 47 270:55
2014 44 291:35
2015 57 177:30
2016 153 230:15
2017 30 250:05
2018 16 318:16
2019 42 584:19
2020 16 587:17
2021 11 563:27
 
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