Jerks on rifle-range shot blue bird (9,6)
I believe the answer is:
peregrine falcon
'jerks on rifle-range shot blue bird' is the definition.
I can't tell whether this definition defines the answer.
'jerks on rifle-range shot blue bird' is the wordplay.
'jerks' becomes 'PE' (Physical Education - jerks can mean exercise).
'on' is a charade indicator (letters next to each other).
'shot' is an anagram indicator.
'blue bird' becomes 'con' (I am not sure about this - if you are sure you should believe this answer much more).
'rifle'+'range'='riflerange'
'riflerange' with letters rearranged gives 'regrinefal'.
'pe'+'regrinefal'+'con'='PEREGRINE FALCON'
(Other definitions for peregrine falcon that I've seen before include "up in the air?" , "bird?" , "She kills small creatures" .)