Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 7 143:25
1982 5 100:04
1983 2 76:05
1984 63 157:55
1985 0 193:05
1986 105 180:40
1987 0 99:15
1988 23 216:00
1989 16 269:46
1990 30 262:45
1991 23 405:47
1992 130 645:00
1993 121 397:58
1994 42 286:00
1995 14 224:45
1996 42 325:15
1997 8 356:45
1998 26 339:30
1999 11 267:15
2000 5 261:30
2001 38 524:35
2002 21 526:15
2003 42 567:15
2004 19 455:05
2005 85 601:15
2006 23 389:55
2007 79 432:55
2008 55 525:55
2009 40 399:05
2010 38 249:40
2011 17 319:15
2012 24 231:35
2013 25 270:55
2014 9 291:35
2015 4 177:30
2016 9 230:15
2017 3 250:05
2018 7 318:16
2019 116 584:19
2020 114 587:17
2021 142 563:27
 
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