One that might pick up a bird (5)
I believe the answer is:
crane
This clue is a double definition.
'one that might pick up' is the first definition.
'a bird' is the second definition.
(crane is a kind of bird)
(Other definitions for crane that I've seen before include "Large long-legged bird" , "Wading bird to lift heavy objects?" , "Bird; mechanical lift" , "Device for picking up" , "Wading bird - lifting device" .)