Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 21 143:25
1982 22 100:04
1983 41 76:05
1984 66 157:55
1985 58 193:05
1986 106 180:40
1987 15 99:15
1988 42 216:00
1989 191 269:46
1990 39 262:45
1991 60 405:47
1992 188 645:00
1993 162 397:58
1994 121 286:00
1995 131 224:45
1996 53 328:00
1997 88 356:45
1998 83 339:30
1999 63 267:15
2000 17 261:30
2001 51 524:35
2002 31 526:15
2003 71 567:15
2004 75 455:05
2005 46 601:15
2006 65 389:55
2007 39 432:55
2008 8 525:55
2009 28 399:05
2010 22 249:40
2011 28 319:15
2012 11 231:35
2013 43 270:55
2014 19 291:35
2015 1 177:30
2016 10 230:15
2017 5 250:05
2018 13 318:16
2019 12 584:19
2020 29 587:17
2021 16 646:27
2022 23 442:55
 
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