Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 105 143:25
1982 1186 100:04
1983 2053 76:05
1984 7443 157:55
1985 3486 193:05
1986 7292 180:40
1987 310 99:15
1988 981 216:00
1989 1935 269:46
1990 982 262:45
1991 4639 405:47
1992 10965 645:00
1993 30917 397:58
1994 29004 286:00
1995 2157 224:45
1996 122921 328:00
1997 1438 356:45
1998 6488 339:30
1999 9345 267:15
2000 297 261:30
2001 14738 525:35
2002 7814 526:15
2003 22941 567:15
2004 1856 455:05
2005 57784 601:15
2006 12071 389:55
2007 7544 432:55
2008 1144 525:55
2009 4557 399:05
2010 24424 249:40
2011 9834 319:15
2012 3131 231:35
2013 29715 270:55
2014 1677 291:35
2015 1012 177:30
2016 1717 230:15
2017 834 250:05
2018 2091 318:16
2019 3041 584:19
2020 1476 587:17
2021 7040 646:27
2022 880 488:40
 
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