Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites
Don't use roostmigration

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 859 143:25
1982 138 100:04
1983 215 76:05
1984 2194 157:55
1985 556 193:05
1986 397 180:40
1987 815 99:15
1988 371 216:00
1989 1467 269:46
1990 715 262:45
1991 1856 405:47
1992 1044 645:00
1993 1164 397:58
1994 2131 286:00
1995 1483 224:45
1996 1122 328:00
1997 1289 356:45
1998 738 339:30
1999 1617 267:15
2000 867 261:30
2001 1154 525:35
2002 1218 526:15
2003 3114 567:15
2004 1650 455:05
2005 2049 601:15
2006 1659 389:55
2007 3466 432:55
2008 2998 525:55
2009 2390 399:05
2010 1759 249:40
2011 3061 319:15
2012 543 231:35
2013 1010 270:55
2014 1205 291:35
2015 655 177:30
2016 904 230:15
2017 763 250:05
2018 872 318:16
2019 2782 584:19
2020 2961 587:17
2021 2113 646:27
2022 4055 525:10
 
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