Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 2 2:00
1981 14 143:25
1982 40 100:04
1983 24 76:05
1984 67 157:55
1985 53 193:05
1986 176 180:40
1987 37 99:15
1988 30 216:00
1989 71 269:46
1990 103 262:45
1991 112 405:47
1992 89 645:00
1993 256 397:58
1994 63 286:00
1995 94 224:45
1996 631 328:00
1997 141 356:45
1998 115 339:30
1999 56 267:15
2000 39 261:30
2001 97 525:35
2002 111 526:15
2003 314 567:15
2004 92 455:05
2005 291 601:15
2006 245 389:55
2007 99 432:55
2008 92 525:55
2009 113 399:05
2010 57 249:40
2011 265 319:15
2012 56 231:35
2013 179 270:55
2014 69 291:35
2015 45 177:30
2016 36 230:15
2017 113 250:05
2018 81 318:16
2019 309 584:19
2020 400 587:17
2021 1125 646:27
2022 199 477:05
 
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