Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 1 143:25
1982 14 100:04
1983 5 76:05
1984 11 157:55
1985 22 193:05
1986 21 180:40
1987 35 99:15
1988 28 216:00
1989 57 269:46
1990 67 262:45
1991 61 405:47
1992 150 645:00
1993 81 397:58
1994 127 286:00
1995 92 224:45
1996 146 325:15
1997 146 356:45
1998 289 339:30
1999 168 267:15
2000 251 261:30
2001 328 524:35
2002 231 526:15
2003 317 567:15
2004 403 455:05
2005 286 601:15
2006 190 389:55
2007 271 432:55
2008 420 525:55
2009 429 399:05
2010 241 249:40
2011 337 319:15
2012 312 231:35
2013 140 270:55
2014 166 291:35
2015 51 177:30
2016 126 230:15
2017 159 250:05
2018 228 318:16
2019 535 584:19
2020 387 587:17
2021 154 550:12
 
Partners