Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 1 143:25
1982 0 100:04
1983 0 76:05
1984 5 157:55
1985 4 193:05
1986 2 180:40
1987 11 99:15
1988 11 216:00
1989 26 269:46
1990 13 262:45
1991 21 405:47
1992 32 645:00
1993 61 397:58
1994 50 286:00
1995 16 224:45
1996 21 325:15
1997 40 356:45
1998 185 339:30
1999 47 267:15
2000 53 261:30
2001 16 524:35
2002 33 526:15
2003 182 567:15
2004 73 455:05
2005 67 601:15
2006 34 389:55
2007 114 432:55
2008 159 525:55
2009 59 399:05
2010 36 249:40
2011 75 319:15
2012 23 231:35
2013 16 270:55
2014 12 291:35
2015 22 177:30
2016 1 230:15
2017 19 250:05
2018 43 318:16
2019 179 584:19
2020 112 587:17
2021 42 569:27
 
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