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 6 99:15
1988 9 216:00
1989 13 269:46
1990 292 262:45
1991 365 405:47
1992 263 645:00
1993 345 397:58
1994 327 286:00
1995 30 224:45
1996 0 328:00
1997 0 356:45
1998 0 339:30
1999 0 267:15
2000 0 261:30
2001 0 525:35
2002 0 526:15
2003 1 567:15
2004 0 455:05
2005 1242 601:15
2006 539 389:55
2007 887 432:55
2008 402 525:55
2009 1514 399:05
2010 92 249:40
2011 509 319:15
2012 99 231:35
2013 5965 270:55
2014 2103 291:35
2015 444 177:30
2016 485 230:15
2017 1066 250:05
2018 640 318:16
2019 1719 584:19
2020 9342 587:17
2021 683 646:27
2022 518 532:10
 
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