Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 1 2:00
1981 2 143:25
1982 19 100:04
1983 46 76:05
1984 8 157:55
1985 95 193:05
1986 170 180:40
1987 91 99:15
1988 44 216:00
1989 107 269:46
1990 57 262:45
1991 48 405:47
1992 295 645:00
1993 845 397:58
1994 477 286:00
1995 128 224:45
1996 810 328:00
1997 71 356:45
1998 118 339:30
1999 160 267:15
2000 37 261:30
2001 624 525:35
2002 97 526:15
2003 722 567:15
2004 158 455:05
2005 328 601:15
2006 174 389:55
2007 219 432:55
2008 78 525:55
2009 79 399:05
2010 126 249:40
2011 213 319:15
2012 42 231:35
2013 274 270:55
2014 25 291:35
2015 11 177:30
2016 81 230:15
2017 33 250:05
2018 67 318:16
2019 88 584:19
2020 69 587:17
2021 88 646:27
2022 198 477:05
 
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