Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 8 143:25
1982 102 100:04
1983 15 76:05
1984 89 157:55
1985 124 193:05
1986 136 180:40
1987 87 99:15
1988 128 216:00
1989 257 269:46
1990 407 262:45
1991 191 405:47
1992 187 645:00
1993 142 397:58
1994 66 286:00
1995 32 224:45
1996 16 325:15
1997 55 356:45
1998 19 339:30
1999 82 267:15
2000 81 261:30
2001 324 524:35
2002 85 526:15
2003 164 567:15
2004 116 455:05
2005 119 601:15
2006 102 389:55
2007 144 432:55
2008 86 525:55
2009 112 399:05
2010 50 249:40
2011 126 319:15
2012 41 231:35
2013 125 270:55
2014 127 291:35
2015 5 177:30
2016 42 230:15
2017 46 250:05
2018 195 318:16
2019 163 584:19
2020 132 587:17
2021 316 644:27
 
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