You already have guard animals....the camelids. They are very curious and defensive of
their space.
If you design your chicken shelters with high roosts that they learn to fly to, the chickens
should be safe enough. I gradually raise the roosting height by removing the lower
roosts. Most of my hens can get up on an 8 foot roost, from the ground.
When my dogs are outside, without me, they stay on cables (we have a county leash law and a major highway).
I have a rescued feral dog, a pyrenees/border collie mix that will watch calmly as chickens eat her food and let them take dust baths, or naps, within two feet of her, BUT, every once in a while she decides to "play" with one.
?? So far, no blood.....or..... she totally ate the evidence.