Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 0 143:25
1982 0 100:04
1983 417 76:05
1984 397 157:55
1985 1191 193:05
1986 1466 180:40
1987 537 99:15
1988 1 216:00
1989 3020 269:46
1990 3041 262:45
1991 3628 405:47
1992 4915 645:00
1993 1291 397:58
1994 943 286:00
1995 1880 224:45
1996 1605 328:00
1997 1965 356:45
1998 4959 339:30
1999 6646 267:15
2000 933 261:30
2001 6557 525:35
2002 4087 526:15
2003 2640 567:15
2004 3458 455:05
2005 4961 601:15
2006 2031 389:55
2007 1689 432:55
2008 3541 525:55
2009 1967 399:05
2010 6266 249:40
2011 3584 319:15
2012 1853 231:35
2013 3430 270:55
2014 2495 291:35
2015 2079 177:30
2016 1316 230:15
2017 2476 250:05
2018 6734 318:16
2019 1182 584:19
2020 3363 587:17
2021 1447 646:27
2022 4133 477:05
 
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