Help dealing with some very questionable neighbors?

I just moved into a new neighborhood on the west side of Hillsborough, and anyway, it's a nice part of town. The schools here are great, there's a park not two blocks away for the kids...the only problem is with our neighbors.

There are three of them, all middle-aged females. They sit up all night making strange noises, something like a large and angry parrot. We went over to visit them our first day here, the pack leader snarled at me, flared out her neck feathers, and extended her half-foot long retractable claw. I just noticed that the other two weren't within easy range of sight, so I slammed the door, ran to my house, and turned on the electric fence (it never occurred to me to ask our real estate agent why the house was surrounded by a twelve foot high fence, but boy do I know now!).

At any rate, how do I deal with this situation? Also, do you think my neighbors might be velociraptors? I keep saying that they just have a skin condition, but everyone else thinks that they're velociraptors.