Bird jumped in (4)
I believe the answer is:
dove
This clue could be a double definition.
'bird' is the first definition.
(I know that dove is a type of bird)
'jumped in' is the second definition.
The answer and definition can be both to do with motion as well as being past participle verbs.
Perhaps there's an association between them I don't understand?
Can you help me to learn more?
(Other definitions for dove that I've seen before include "plunged in the Grand Canyon" , "Cooing bird" , "Small pigeon" , "A peaceful bird?" , "Peaceful type" .)