Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 2513 143:25
1982 2088 100:04
1983 711 76:05
1984 2242 157:55
1985 2021 193:05
1986 2690 180:40
1987 751 99:15
1988 1182 216:00
1989 4054 269:46
1990 3785 262:45
1991 6074 405:47
1992 2481 645:00
1993 2397 397:58
1994 2073 286:00
1995 1448 224:45
1996 2251 325:15
1997 2556 356:45
1998 1384 339:30
1999 1798 267:15
2000 1078 261:30
2001 1731 524:35
2002 1060 526:15
2003 1629 567:15
2004 742 455:05
2005 1528 601:15
2006 530 389:55
2007 757 432:55
2008 750 525:55
2009 891 399:05
2010 773 249:40
2011 1006 319:15
2012 1311 231:35
2013 734 270:55
2014 177 291:35
2015 296 177:30
2016 208 230:15
2017 137 250:05
2018 200 318:16
2019 99 584:19
2020 126 587:17
2021 95 539:42
 
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