PASSERIFORMES: Campephagidae
Coracina papuensis
Possibly an intermediate morph of race robusta, White-bellied Cuckoo-shrike.
I mistakenly identified this as an immature Black-faced Cuckoo-shrike until I came across a discussion of White-bellied vs Black-faced Cuckoo-shrikes on a Birds in Backyards forum which included references to this particular image - Thanks people.