My two white call ducks flew over their cage last night and the dog got them. I built them a little pond with a house to sleep in surrounded by 4ft chicken wire. When I first put them in one flew out but stuck around the cage so I put him back in and they seemed happy with the set up because for three week they never tried to fly out. My heart is broken they were so cute. I want to know before I get more if they will fly over an 8ft fence or any other suggestions to make sure this never happens again. The dog is not mean he basically was just playing with them but ended up mauling them to death. Please help I need a safe home for my new ducks.