Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 78 143:25
1982 120 100:04
1983 147 76:05
1984 265 157:55
1985 142 193:05
1986 946 180:40
1987 127 99:15
1988 169 216:00
1989 241 269:46
1990 253 262:45
1991 604 405:47
1992 392 645:00
1993 1107 397:58
1994 207 286:00
1995 909 224:45
1996 4617 325:15
1997 693 356:45
1998 1017 339:30
1999 442 267:15
2000 275 261:30
2001 2197 524:35
2002 2611 526:15
2003 1081 567:15
2004 1417 455:05
2005 1748 601:15
2006 3272 389:55
2007 961 432:55
2008 401 525:55
2009 447 399:05
2010 350 249:40
2011 1502 319:15
2012 360 231:35
2013 2110 270:55
2014 124 291:35
2015 170 177:30
2016 2435 230:15
2017 281 250:05
2018 1360 318:16
2019 303 584:19
2020 692 587:17
2021 182 569:27
 
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