A howler, perhaps, from the day shift for example (6)
I believe the answer is:
monkey
'a howler perhaps' is the definition.
(I know that howler is a type of New World monkey)
'day shift for example' is the wordplay.
I cannot quite understand how this works, but
'day' could be 'mon' (abbreviation for Monday) and 'mon' is located in the answer.
'shift' could be 'key' (shift key from a computer keyboard) and 'key' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'from the' is the link.
Can you help me to learn more?
(Other definitions for monkey that I've seen before include "Any of various long-tailed primates" , "Medium-sized primate" , "Naughty child; primate" , "See 10" , "Primate with a long tail" .)