Heather, I would definitely recommend a Great Pyrenees. My dogs are bonded to the birds and the property. They have a certain distance they watch and will go after anything that comes in their circle. An ideal situation would be to live in the middle of your acreage I think. I have no fence but they seem to know where to patrol. When my male was younger he used to get carried away following any slow moving vehicle. He doesn't do that any more thank goodness. They are sweet and lovable pets but I know at least my female would tear into any one that tried to harm me too.
I think I would recommend a started pup. You want one that is fairly young so it can bond to you and the property,but you don't want it so young that you have to go through too many months of puppy stage. If you could find one that is between 4-9 months old I think you would be alright. Also since you have other dogs it needs to be young enough it won't see them as a threat. That is unless you got one as easy going as Josie female was. She is a one in a million rare Pyrenees. People often get them and need to rehome them because they live in town or have to move. I would definitely watch craigslist.
They actually don't eat as much as a lot of large dogs. A lot depends on how many predators are around, how hard they are working, and what the weather is.
I had a good last 24 hours or so. I sold 25 guineas. Then this morning I sold 120 ducklings. I still have about 50 of them left. The guy couldn't get any more money out of the ATM or he would have taken the rest of them.
Then Karen came and brought me some more beautiful chickens. We had a good visit although I probably cooked her in the heat. I am a terrible hostess. Thank you sweet lady.
Since then I have just moved the new birds to a bigger pen and been researching electric poultry netting. The kind I want is back ordered.
I've been playing with my turkey poults. They're so sweet. I've been working so hard lately it was nice to just chill for a while. I need to get busy but after all it is a holiday!