Unidentified raptor

Description

Drawing depicting: Unidentified raptor, Blank label; adequately drawn bird, over Gould's sketch and erasures, but the whole pencil and wash (or crayon) bird has been gone over in bold ink: outline, structures, and feathers. The closest identification is Haliastur sphenurus (Birds of Australia I: 5) but the plate is completely different. It is difficult to imagine what the purpose of the ink outlining might have been, since it would not lend itself to either fine copying or further development.