Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 4 5:30
1980 0 2:00
1981 2279 143:25
1982 176 100:04
1983 13 76:05
1984 1444 157:55
1985 1086 193:05
1986 507 180:40
1987 124 99:15
1988 587 216:00
1989 1152 269:46
1990 648 262:45
1991 5544 405:47
1992 530 645:00
1993 5715 397:58
1994 567 286:00
1995 1999 224:45
1996 3608 325:15
1997 548 356:45
1998 336 339:30
1999 3066 267:15
2000 1098 261:30
2001 1787 524:35
2002 2565 526:15
2003 191 567:15
2004 623 455:05
2005 1366 601:15
2006 1110 389:55
2007 5742 432:55
2008 527 525:55
2009 466 399:05
2010 1272 249:40
2011 1958 319:15
2012 489 231:35
2013 973 270:55
2014 206 291:35
2015 520 177:30
2016 123 230:15
2017 240 250:05
2018 215 318:16
2019 200 584:19
2020 396 587:17
2021 303 644:27
 
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