Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 0 143:25
1982 0 100:04
1983 10 76:05
1984 2 157:55
1985 1 193:05
1986 1531 180:40
1987 4 99:15
1988 4 216:00
1989 79 269:46
1990 213 262:45
1991 17 405:47
1992 78 645:00
1993 41 397:58
1994 30 286:00
1995 21 224:45
1996 602 325:15
1997 130 356:45
1998 114 339:30
1999 34 267:15
2000 7 261:30
2001 71 524:35
2002 36 526:15
2003 337 567:15
2004 295 455:05
2005 1981 601:15
2006 60 389:55
2007 447 432:55
2008 29 525:55
2009 82 399:05
2010 98 249:40
2011 186 319:15
2012 284 231:35
2013 48 270:55
2014 61 291:35
2015 1 177:30
2016 115 230:15
2017 0 250:05
2018 20 318:16
2019 214 584:19
2020 2260 587:17
2021 2056 563:27
 
Partners