Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 12 143:25
1982 66 100:04
1983 18 76:05
1984 127 157:55
1985 49 193:05
1986 150 180:40
1987 0 99:15
1988 7 216:00
1989 46 269:46
1990 36 262:45
1991 237 405:47
1992 93 645:00
1993 271 397:58
1994 43 286:00
1995 5 224:45
1996 56 328:00
1997 46 356:45
1998 65 339:30
1999 10 267:15
2000 6 261:30
2001 847 524:35
2002 35 526:15
2003 223 567:15
2004 86 455:05
2005 104 601:15
2006 81 389:55
2007 143 432:55
2008 136 525:55
2009 15 399:05
2010 49 249:40
2011 63 319:15
2012 70 231:35
2013 56 270:55
2014 55 291:35
2015 60 177:30
2016 6 230:15
2017 123 250:05
2018 145 318:16
2019 30 584:19
2020 70 587:17
2021 60 646:27
 
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