https://www.bfn.de/artenportraits/circus-cyaneus
Circus cyaneus | BFN
circus cyaneusbfn
https://www.rspb.org.uk/birds-and-wildlife/hen-harrier
Hen Harrier Bird Facts | Circus Cyaneus
While males are a pale grey colour, females and immatures are brown with a white rump and a long, barred tail which give them the name 'ringtail'. Read more
hen harrierbird factscircuscyaneus