Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 2 5:30
1980 0 2:00
1981 40 143:25
1982 20 100:04
1983 9 76:05
1984 43 157:55
1985 17 193:05
1986 28 180:40
1987 34 99:15
1988 70 216:00
1989 44 269:46
1990 92 262:45
1991 43 405:47
1992 83 645:00
1993 107 397:58
1994 82 286:00
1995 73 224:45
1996 58 325:15
1997 53 356:45
1998 76 339:30
1999 68 267:15
2000 78 261:30
2001 55 524:35
2002 34 526:15
2003 55 567:15
2004 97 455:05
2005 97 601:15
2006 56 389:55
2007 89 432:55
2008 54 525:55
2009 42 399:05
2010 24 249:40
2011 73 319:15
2012 29 231:35
2013 4 270:55
2014 17 291:35
2015 11 177:30
2016 19 230:15
2017 19 250:05
2018 26 318:16
2019 32 584:19
2020 55 587:17
2021 37 569:27
 
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