Bird food (8)
I believe this clue is a double definition.
'bird' is the first definition.
(sort of bird)
'food?' is the second definition.
(pie is a kind of food)
(Other definitions for pie that I've seen before include "Type of chart" , "In the sky, it's an empty promise" , "something with custard, say" , "Small, former coin of India" , "In the sky, it's an unrealistic prospect" .)
This clue is a double definition.
'bird' is the first definition.
(both can refer to time in prison)
'food' is the second definition.
(porridge is a kind of food)
(Other definitions for porridge that I've seen before include "hot stuff?" , "Morning oats" , "Cooked meal (served in prison?)" , "Jail sentence" , "Breakfast of boiled oatmeal and milk" .)