Time to take a bird out for a run, possibly (7)
I believe the answer is:
january
'time to take a bird' is the definition.
I can't judge whether this definition defines the answer.
'out for a run possibly' is the wordplay.
'out' means one lot of letters goes inside another.
'for' becomes 'jay' (I am not sure about this - if you are sure you should believe this answer much more).
'possibly' is an anagram indicator.
'a'+'run'='arun'
'arun' with letters rearranged gives 'nuar'.
'jay' going around 'nuar' is 'JANUARY'.
Can you help me to learn more?
(Another definition for january that I've seen is " First month".)