'Scheepmaker's crowned pigeon'

An odd case and very unlikely to actually be Scheepmaker's but all signs etc. said Scheepmaker's. Probably Sclater's though unfortunately.

It's a Sclater's Crowned Pigeon.

@Chlidonias What are the distinguishing characteristics for future reference?

@amur leopard scroll down a bit on this link and you'll find a diagram showing all four species for comparison: Species New to Science: [Ornithology • 2018] Recovering the Evolutionary History of Crowned Pigeons (Columbidae: Goura): implications for the Biogeography and Conservation of New Guinean Lowland Birds

@Chlidonias Why do they switch the Western and Sclater's images between diagrams? I assume you are taking the first diagram as the definitive one, so I guess that figures although from what I've seen sources online are really quite hazy on the morphological differences between Sclater's and Scheepmaker's. Thanks for the ID though, very helpful .

@amur leopard I never noticed they had swapped the two between the diagrams! But yes, the first one is correct. The species are easy to tell apart - victoria is the only one with white in the crest (like a queen's crown - all the others have plain blue crests); cristata has all blue underparts with the maroon colour only on the back and wings (hence Blue Crowned Pigeon); sclaterii has maroon underparts and wing; scheepmakeri has maroon underparts and a blue wing. Confusion only comes because sclaterii was formerly a subspecies of scheepmakeri, so websites will often give you descriptions for the former under the name of the latter. There can also sometimes be the added problem of hybrids in captive birds (e.g. between cristata and sclateri).

@Chlidonias Thanks for the explanation, very clear - will know for the future .