Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2010 143 192:15
2011 243 548:35
2012 238 598:30
2013 273 613:57
2014 308 701:15
2015 292 626:35
2016 300 715:25
2017 196 674:15
2018 332 645:36
2019 265 642:45
2020 35 188:20
2021 124 381:00
 
Partners