Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 22 5:30
1980 0 2:00
1981 285 143:25
1982 594 100:04
1983 172 76:05
1984 367 157:55
1985 374 193:05
1986 510 180:40
1987 338 99:15
1988 307 216:00
1989 490 269:46
1990 404 262:45
1991 1859 405:47
1992 899 645:00
1993 573 397:58
1994 432 286:00
1995 1217 224:45
1996 4045 325:15
1997 3713 356:45
1998 1338 339:30
1999 919 267:15
2000 830 261:30
2001 5172 524:35
2002 11517 526:15
2003 1651 567:15
2004 1119 455:05
2005 2418 601:15
2006 5079 389:55
2007 3405 432:55
2008 1459 525:55
2009 2296 399:05
2010 709 249:40
2011 5898 319:15
2012 745 231:35
2013 13161 270:55
2014 759 291:35
2015 1434 177:30
2016 2661 230:15
2017 1586 250:05
2018 1979 318:16
2019 1767 584:19
2020 3937 587:17
2021 569 644:27
 
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