Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 2 2:00
1981 4 143:25
1982 5 100:04
1983 9 76:05
1984 70 157:55
1985 12 193:05
1986 33 180:40
1987 7 99:15
1988 4 216:00
1989 37 269:46
1990 34 262:45
1991 50 405:47
1992 59 645:00
1993 50 397:58
1994 22 286:00
1995 58 224:45
1996 201 328:00
1997 34 356:45
1998 57 339:30
1999 62 267:15
2000 49 261:30
2001 141 525:35
2002 93 526:15
2003 195 567:15
2004 173 455:05
2005 150 601:15
2006 235 389:55
2007 176 432:55
2008 116 525:55
2009 77 399:05
2010 52 249:40
2011 102 319:15
2012 78 231:35
2013 140 270:55
2014 75 291:35
2015 108 177:30
2016 188 230:15
2017 90 250:05
2018 85 318:16
2019 96 584:19
2020 113 587:17
2021 156 646:27
2022 131 485:50
 
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