Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 14 61:32
2007 127 211:28
2008 710 460:04
2009 785 365:00
2010 1710 637:04
2011 1006 348:08
2012 439 333:29
2013 832 281:38
2014 946 156:47
2015 54 117:20
2016 21 142:02
2017 88 179:22
2018 195 222:16
2019 104 193:06
 
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