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 4 143:25
1982 1 100:04
1983 0 76:05
1984 1 157:55
1985 8 193:05
1986 0 180:40
1987 1 99:15
1988 7 216:00
1989 3 269:46
1990 16 262:45
1991 3 405:47
1992 43 645:00
1993 3 397:58
1994 5 286:00
1995 9 224:45
1996 2 328:00
1997 415 356:45
1998 45 339:30
1999 9 267:15
2000 34 261:30
2001 11 525:35
2002 10 526:15
2003 46 567:15
2004 6 455:05
2005 32 601:15
2006 21 389:55
2007 50 432:55
2008 203 525:55
2009 58 399:05
2010 30 249:40
2011 60 319:15
2012 44 231:35
2013 77 270:55
2014 64 291:35
2015 11 177:30
2016 10 230:15
2017 6 250:05
2018 24 318:16
2019 71 584:19
2020 88 587:17
2021 1704 646:27
2022 592 525:10
 
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