### Clue: Bunch of birds in ruler's domain? (5)
### Answer: ROOST 
 ### Explanation: Definition: Bunch of birds
Double definition, the second referring to the expression "rule the roost", though as I learnt a while back from a Pasquale puzzle the "correct" or original version is "rule the roast" (i.e. to be at the head of a table where a roast is served)