bubuk

Sometimes the bird does the etymological work for you. Boobook is an Australian bird name based on an Aboriginal imitation of the owl's call, commonly linked to Dharug and neighboring language traditions around southeastern Australia. It entered colonial natural history in the 19th century. The sound was already there in the night. The notebook merely followed it.

This kind of borrowing looks simple and is not. Settler spelling fixed one version of an Indigenous sound pattern and then used it as a standardized species name. The original auditory knowledge was local, precise, and ecological. English turned it into a label for field guides.

As ornithology expanded in Australia, boobook became the common English name for several owl populations, especially the southern boobook. The word endured because onomatopoeia travels well. If a bird repeats itself every dusk, people tend to believe the bird over the lexicographer.

Today boobook is a normal Australian bird name with deep Aboriginal roots that many speakers never notice. That is a familiar colonial trick: use the inheritance and forget the source. The owl is still calling in the old register. English just wrote it down.