Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 4 143:25
1982 373 100:04
1983 17 76:05
1984 38 157:55
1985 20 193:05
1986 108 180:40
1987 25 99:15
1988 12 216:00
1989 73 269:46
1990 66 262:45
1991 149 405:47
1992 71 645:00
1993 60 397:58
1994 25 286:00
1995 15 224:45
1996 175 328:00
1997 114 356:45
1998 191 339:30
1999 46 267:15
2000 27 261:30
2001 265 524:35
2002 271 526:15
2003 96 567:15
2004 109 455:05
2005 278 601:15
2006 159 389:55
2007 112 432:55
2008 79 525:55
2009 150 399:05
2010 22 249:40
2011 1023 319:15
2012 174 231:35
2013 922 270:55
2014 51 291:35
2015 9 177:30
2016 80 230:15
2017 86 250:05
2018 172 318:16
2019 109 584:19
2020 276 587:17
2021 113 646:27
2022 265 442:55
 
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