Graph

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

Year Totals Observation hours
1900 4 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 1 180:40
1987 2 99:15
1988 7 216:00
1989 8 269:46
1990 30 262:45
1991 22 405:47
1992 32 645:00
1993 39 397:58
1994 44 286:00
1995 40 224:45
1996 94 328:00
1997 91 356:45
1998 165 339:30
1999 246 267:15
2000 294 261:30
2001 279 525:35
2002 375 526:15
2003 749 567:15
2004 379 455:05
2005 494 601:15
2006 220 389:55
2007 479 432:55
2008 602 525:55
2009 812 399:05
2010 356 249:40
2011 533 319:15
2012 310 231:35
2013 718 270:55
2014 1016 291:35
2015 433 177:30
2016 556 230:15
2017 1546 250:05
2018 2793 318:16
2019 2464 584:19
2020 2762 587:17
2021 1584 646:27
2022 1020 525:10
 
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