Bugs tormented fledgelings having escaped shed (7)
I believe the answer is:
niggles
'bugs' is the definition.
The answer and definition can be both to do with human feelings as well as being verbs in their -s form.
Perhaps you can see a link between them that I don't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for niggles that I've seen before include "Slight but persistent anxieties" , "minor injuries" , "Petty but persistent annoyances" , "Small worries" .)