It’s hard to resist a box marked ‘unknown skull’. Opening and unwrapping the skull showed that it a pretty large bird, the beak being the major giveaway.
With no data on the skull I couldn’t tell where it had come from, which would have helped narrow down what it was.
The roundness of the cranium and the large, generalised beak immediately rounded it down to just five species; the large ratites, and the lack of casque/helmet to just four .
I looked in our osteology collection for a rhea skull, an ostrich skull, and an emu skull to compare it to.
We only have a rhea skull in the collection so I first compared it to that.
To compare it to the other skulls I used The Bird Skull Collection
Judging by the size, and the general characteristics I concluded that the skull is from an ostrich.
I then wrote it a label, and had it accessioned so I could enter it on the database.