Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1900 17 5:30
1980 0 2:00
1981 566 143:25
1982 322 100:04
1983 12 76:05
1984 1717 157:55
1985 1596 193:05
1986 187 180:40
1987 33 99:15
1988 941 216:00
1989 512 269:46
1990 622 262:45
1991 4624 405:47
1992 827 645:00
1993 4048 397:58
1994 848 286:00
1995 518 224:45
1996 3006 328:00
1997 120 356:45
1998 404 339:30
1999 1651 267:15
2000 1028 261:30
2001 1986 525:35
2002 2064 526:15
2003 47 567:15
2004 700 455:05
2005 5364 601:15
2006 405 389:55
2007 1212 432:55
2008 4618 525:55
2009 2963 399:05
2010 2630 249:40
2011 6101 319:15
2012 1202 231:35
2013 1702 270:55
2014 84 291:35
2015 100 177:30
2016 71 230:15
2017 1708 250:05
2018 375 318:16
2019 609 584:19
2020 595 587:17
2021 190 646:27
2022 255 477:05
 
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