Those flying lowest? (6)
I believe the answer is:
owlets
'those' is the definition.
I can't judge whether this defines the answer.
'flying lowest?' is the wordplay.
'flying' indicates an anagram (letters fly around into new positions).
'lowest' anagrammed gives 'OWLETS'.
Can you help me to learn more?
(Other definitions for owlets that I've seen before include "Young wise birds" , "Baby wise old birds" .)