Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 17 143:25
1982 39 100:04
1983 0 76:05
1984 0 157:55
1985 32 193:05
1986 26 180:40
1987 4 99:15
1988 160 216:00
1989 652 269:46
1990 21 262:45
1991 34 405:47
1992 25 645:00
1993 763 397:58
1994 424 286:00
1995 64 224:45
1996 64 325:15
1997 309 356:45
1998 1357 339:30
1999 517 267:15
2000 324 261:30
2001 730 524:35
2002 166 526:15
2003 164 567:15
2004 128 455:05
2005 269 601:15
2006 347 389:55
2007 226 432:55
2008 1892 525:55
2009 174 399:05
2010 11 249:40
2011 260 319:15
2012 176 231:35
2013 51 270:55
2014 345 291:35
2015 140 177:30
2016 3335 230:15
2017 498 250:05
2018 840 318:16
2019 1295 584:19
2020 306 587:17
2021 190 644:27
 
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