Police are appealing for information after a number of birds were killed at a house in Dunnington, which has also had two windows broken.
Between Monday 3 June and Monday 17 June, two ground floor window panes were smashed with a pellet gun.
On a second occasion, someone opened a chicken coup near the house and let the chickens out, which were killed by foxes.
On a third occasion a large male peacock was killed by unknown means.
Anyone with information should call Humberside Police 101, quoting crime number CS/1980702/2013.