Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 1 2:00
1981 303 143:25
1982 342 100:04
1983 172 76:05
1984 306 157:55
1985 488 193:05
1986 334 180:40
1987 166 99:15
1988 384 216:00
1989 992 269:46
1990 1373 262:45
1991 3078 405:47
1992 3686 645:00
1993 1924 397:58
1994 1015 286:00
1995 1573 224:45
1996 2172 328:00
1997 1911 356:45
1998 2699 339:30
1999 1381 267:15
2000 1063 261:30
2001 4830 524:35
2002 7255 526:15
2003 4014 567:15
2004 3756 455:05
2005 4617 601:15
2006 4577 389:55
2007 4559 432:55
2008 1540 525:55
2009 2893 399:05
2010 1643 249:40
2011 4309 319:15
2012 1136 231:35
2013 6767 270:55
2014 1755 291:35
2015 923 177:30
2016 1862 230:15
2017 1334 250:05
2018 2465 318:16
2019 5063 584:19
2020 6896 587:17
2021 4873 646:27
2022 3582 424:55
 
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