One bit of a plant another duck's destroyed (6)
I believe the answer is:
anther
'duck's destroyed' is the definition.
I can't judge whether this defines the answer.
'one bit of a plant another' is the wordplay.
I cannot really see how this works, but
'one' could be 'the' (both can introduce a definite example of something) and 'the' is found in the answer.
'a' could be 'an' and 'an' is found in the answer.
'another' could be 'r' (I've seen this in other clues) and 'r' is located in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for anther that I've seen before include "Pollen-containing flower part found in Tehran" , "Pollen-producing part of a flower" , "Part of a plant that contains pollen" , "Pollen-holding part of stamen" , "Pollen container of the flower" .)