It may be found stuffed in some museum (3)
I believe the answer is:
emu
'it may be found stuffed' is the definition.
The definition suggests a singular noun which matches the answer.
'in some museum' is the wordplay.
'in' indicates the answer is hidden within the clue.
'EMU' can be found hidden inside 'some museum'.
Can you help me to learn more?
(Other definitions for emu that I've seen before include "unit of measurement" , "Ratite" , "Aussie runner" , "Parky's nemesis" , "one offering challenge to Hull?" .)