Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 5 66:45
1998 51 46:00
1999 3 79:15
2000 7 114:15
2001 6 119:45
2002 13 311:15
2003 22 433:15
2004 114 539:15
2005 227 741:30
2006 435 671:30
2007 354 742:30
2008 291 700:00
2009 326 629:45
2010 171 570:15
2011 182 520:15
2012 363 543:15
2013 399 410:30
2014 177 500:15
2015 275 683:45
2016 665 688:45
2017 317 671:00
2018 1493 739:00
2019 271 461:30
 
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