Scream and call at night (4)
I believe the answer is:
hoot
I believe this clue is a double definition.
'scream' is the first definition.
(I've seen this before)
'call at night' is the second definition.
(I've seen this in another clue)
'and' acts as a link.
(Other definitions for hoot that I've seen before include "Shout of derision" , "Honk - laugh" , "Funny thing (informal);bird call" , "Raucous cry" , "Hollow cry" .)