Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 178 143:25
1982 167 100:04
1983 167 76:05
1984 141 157:55
1985 233 193:05
1986 265 180:40
1987 191 99:15
1988 503 216:00
1989 364 269:46
1990 397 262:45
1991 656 405:47
1992 792 645:00
1993 635 397:58
1994 654 286:00
1995 433 224:45
1996 588 328:00
1997 908 356:45
1998 761 339:30
1999 578 267:15
2000 457 261:30
2001 1318 524:35
2002 1319 526:15
2003 968 567:15
2004 1214 455:05
2005 1152 601:15
2006 944 389:55
2007 1544 432:55
2008 823 525:55
2009 1778 399:05
2010 1107 249:40
2011 1984 319:15
2012 978 231:35
2013 1029 270:55
2014 1712 291:35
2015 649 177:30
2016 612 230:15
2017 1106 250:05
2018 1443 318:16
2019 1792 584:19
2020 3779 587:17
2021 1285 646:27
 
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