Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2009 52 32:45
2010 134 370:25
2011 574 504:57
2012 438 524:55
2013 242 236:55
2014 2017 499:40
2015 1044 528:21
2016 734 355:25
2017 1527 350:00
2018 1601 365:40
2019 2702 287:15
2020 262 195:00
 
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