Ferry port gets rid of last bird (4)
I believe the answer is:
dove
'bird' is the definition.
(I know that dove is a type of poultry)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for dove that I've seen before include "Peaceful type" , "A peaceful bird?" , "Bird[s]" , "Bird in the pigeon family" , "Mourning, collared, bird" .)