What many others have also not taken into consideration here is the size and type of the non-LGD dogs they have 'guarding' their fowl. Perhaps all they have to worry about is a possum, raccoons and a fox. In other words, small predators that can be taken on by such small non LGD breeds.
On commercial livestock operations out West here, that is not the case.
Out here in NV where sheep are run in the 1000's, and cattle in the 10,000's, we have lion, bear, wolves, feral dog packs, coyote packs, fox, birds of prey etc., a small 40 -70 pound dog (let me say, anything under 100 pounds), is no match for keeping large predators from livestock and poultry. Also, coyotes work it. Do you know how? They will send a solo coyote out as a decoy to draw the one LGD away from it's flock or herd. Then the rest of the coyote pack comes in from the other side and wipes out your livestock, packs off a lamb, chickens, etc. That is why savvy operators always run several LGDs. One is never enough. They cannot be everywhere at once. But again this is on large ranches and farms, too. But fact remains: a small dog is no match for this type of predator and never will be. A pit bull grabs one coyote and hangs on while the rest come in and eviscerate him or break legs. That's life out here in the "Big Nasty".
That is why LGD breeds are large. Some are huge, over 200 pounds. They HAVE to be. A sheltie or even a lab is no match for a pack of coyotes or a bear or a wolf. That is where the rubber meets the road and where your theories all really get tested in the end. And ultimately, where many people advocating the use of small non LGD breeds will ultimately perhaps find out what I am saying, is true.
Finally, and this needs to be said, I'm trying to be as diplomatic here as I can be. I'm no chicken expert and never will be - and I'd defer to someone who knows more about chickens than I do were I to be doing research on a chicken subject. I'd hardly be coming in here with a chip on my shoulder, arguing with someone who is more savvy about a chicken ailment than I am. Well….? It works both ways. My expertise is in LGDs, period. I doubt many others on this forum have the experience I have had with them, and so I am somewhat affronted but not surprised by the hostile way everyone is reacting to my posts about LGDs. Its like no one can tell you - you already know it all. Hmmmm….?
I'll leave it at that. I posted over in the Predators forum links to my blog and there is a ton of good info on it I hope people will read in order to learn more about using LGDs. That's all I care about, teaching folks how to understand and use these dogs properly. Don't hate me for it!
Apparently you are not familiar with the Plott Hounds?
One dog will run a bear or mountain lion up a tree! If they choose to come back down to fight, the fight is on! The Plott will not back down, some have died of course, nothing in life is garunteed ... but, usually one of three things happens ... one of them is killed, the critter climbs back up in the tree, or it runs away with the dog(s) chasing it, until it climbs another tree ... usually the latter is what happens ...
Lots of hunters will of course run a pack of dogs, like you said more than one is helpful, but over the miles of running, the pack can get seperated too ... eventually they all end up at the tree, and with more than just the one Plott that put it up the tree, down there ... usually ... they will stay put ...
The standard calls for males to be no more than 75 pounds by the way ...
In AZ most of our coyotes are smallish (30-35 pounds) and usually are in pairs, unless they have their young with them ...