Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 204 143:25
1982 7 100:04
1983 27 76:05
1984 164 157:55
1985 11 193:05
1986 75 180:40
1987 35 99:15
1988 102 216:00
1989 1176 269:46
1990 53 262:45
1991 299 405:47
1992 47 645:00
1993 199 397:58
1994 221 286:00
1995 333 224:45
1996 146 328:00
1997 966 356:45
1998 143 339:30
1999 190 267:15
2000 64 261:30
2001 586 525:35
2002 2139 526:15
2003 461 567:15
2004 854 455:05
2005 683 601:15
2006 1828 389:55
2007 1356 432:55
2008 219 525:55
2009 614 399:05
2010 1429 249:40
2011 666 319:15
2012 7 231:35
2013 81 270:55
2014 141 291:35
2015 23 177:30
2016 942 230:15
2017 33 250:05
2018 94 318:16
2019 21 584:19
2020 1642 587:17
2021 109 646:27
2022 76 477:05
 
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