Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 1 5:30
1980 0 2:00
1981 5 143:25
1982 3 100:04
1983 0 76:05
1984 32 157:55
1985 3 193:05
1986 44 180:40
1987 6 99:15
1988 4 216:00
1989 28 269:46
1990 9 262:45
1991 46 405:47
1992 70 645:00
1993 53 397:58
1994 57 286:00
1995 163 224:45
1996 229 325:15
1997 133 356:45
1998 137 339:30
1999 175 267:15
2000 119 261:30
2001 270 524:35
2002 300 526:15
2003 294 567:15
2004 221 455:05
2005 319 601:15
2006 209 389:55
2007 488 432:55
2008 481 525:55
2009 460 399:05
2010 480 249:40
2011 569 319:15
2012 249 231:35
2013 961 270:55
2014 524 291:35
2015 269 177:30
2016 323 230:15
2017 1172 250:05
2018 982 318:16
2019 1177 584:19
2020 1506 587:17
2021 2082 563:27
 
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