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 0 143:25
1982 0 100:04
1983 0 76:05
1984 0 157:55
1985 0 193:05
1986 0 180:40
1987 0 99:15
1988 0 216:00
1989 1 269:46
1990 2 262:45
1991 0 405:47
1992 9 645:00
1993 0 397:58
1994 1 286:00
1995 6 224:45
1996 1 328:00
1997 2 356:45
1998 3 339:30
1999 39 267:15
2000 11 261:30
2001 5 525:35
2002 21 526:15
2003 20 567:15
2004 1 455:05
2005 27 601:15
2006 6 389:55
2007 20 432:55
2008 14 525:55
2009 8 399:05
2010 3 249:40
2011 24 319:15
2012 4 231:35
2013 103 270:55
2014 12 291:35
2015 0 177:30
2016 1 230:15
2017 6 250:05
2018 118 318:16
2019 2 584:19
2020 1 587:17
2021 83 646:27
2022 29 525:10
 
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