Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 6 5:30
1980 0 2:00
1981 969 143:25
1982 567 100:04
1983 301 76:05
1984 868 157:55
1985 723 193:05
1986 629 180:40
1987 130 99:15
1988 622 216:00
1989 879 269:46
1990 1660 262:45
1991 2638 405:47
1992 1755 645:00
1993 2086 397:58
1994 992 286:00
1995 549 224:45
1996 2115 325:15
1997 1566 356:45
1998 1666 339:30
1999 1129 267:15
2000 854 261:30
2001 943 524:35
2002 1532 526:15
2003 1743 567:15
2004 1535 455:05
2005 1709 601:15
2006 1602 389:55
2007 1147 432:55
2008 1062 525:55
2009 1551 399:05
2010 942 249:40
2011 2012 319:15
2012 1556 231:35
2013 3597 270:55
2014 781 291:35
2015 1830 177:30
2016 1132 230:15
2017 621 250:05
2018 1028 318:16
2019 1094 584:19
2020 1909 587:17
2021 541 539:42
 
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