Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 2 2:00
1981 35 143:25
1982 25 100:04
1983 0 76:05
1984 8 157:55
1985 9 193:05
1986 24 180:40
1987 12 99:15
1988 20 216:00
1989 67 269:46
1990 43 262:45
1991 59 405:47
1992 262 645:00
1993 107 397:58
1994 1336 286:00
1995 263 224:45
1996 61 325:15
1997 93 356:45
1998 1166 339:30
1999 586 267:15
2000 493 261:30
2001 42 524:35
2002 220 526:15
2003 333 567:15
2004 2175 455:05
2005 199 601:15
2006 188 389:55
2007 137 432:55
2008 386 525:55
2009 308 399:05
2010 80 249:40
2011 3817 319:15
2012 59 231:35
2013 315 270:55
2014 70 291:35
2015 18 177:30
2016 121 230:15
2017 14 250:05
2018 2594 318:16
2019 318 584:19
2020 520 587:17
2021 3301 644:27
 
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