Females are slightly smaller than males; they have a smaller bill knob, shorter hackles and browner underparts. Immature birds have a black tail and lack almost all iridescence. There is hardly any variation across the birds' wide range. Even the Palau subspecies C. n. pelewensis has merely shorter neck hackles, but is otherwise almost identical.It is a very vocal species, giving a low-pitched repetitive call.
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At leat this species looks much better than what we know the dodo looked like.
Thanks for the Llama, btw.
Great shot--and natural history information, as usual!
It's pretty cool to learn as well that it's the closest relative to the Dodo!