Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 4 5:30
1980 0 2:00
1981 469 143:25
1982 122 100:04
1983 59 76:05
1984 454 157:55
1985 620 193:05
1986 254 180:40
1987 129 99:15
1988 254 216:00
1989 391 269:46
1990 331 262:45
1991 800 405:47
1992 212 645:00
1993 479 397:58
1994 188 286:00
1995 135 224:45
1996 280 328:00
1997 109 356:45
1998 143 339:30
1999 179 267:15
2000 115 261:30
2001 234 525:35
2002 180 526:15
2003 73 567:15
2004 234 455:05
2005 300 601:15
2006 150 389:55
2007 111 432:55
2008 360 525:55
2009 144 399:05
2010 174 249:40
2011 69 319:15
2012 70 231:35
2013 94 270:55
2014 12 291:35
2015 28 177:30
2016 38 230:15
2017 115 250:05
2018 91 318:16
2019 150 584:19
2020 118 587:17
2021 116 646:27
2022 56 477:05
 
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