My husband and I got 5 female ducklings a few months back. Now all 5 are full grown and beautiful. We built them a very secure duck house with small pen. During the day we let them run in our secure fenced in backyard. Today I looked out to see a hawk standing over one of our runner ducks. I ran outside and scared off the hawk. I grabbed the duck to find it was barely still alive, with part of its head/neck ripped out. It shortly died. We though we had taken precautions. We had read up on duck keeping, referring primarily to Storey's guide. They mentioned hawks as a problem for ducklings, but not for full sized ducks. Now we cannot even let our ducks run in our fenced in backyard for fear of hawk. This hawk was barely even larger than our duck.