Okay, I'm going to throw my 2 cents in here.
[on soapbox ]
I have guinea fowl within the city limits (with all the appropriate permits and testing).
I have 15 and ,yes, on only 1 acre of land (but will be 1.5 by November of this year.) The MDA and the DNR has no problem with that.
I hatched them from eggs, I did NOT clip their wings and I have a three foot fence.
They are well trained and stay in the yard all day, stay in the coop at night and lay eggs in our nesting box (a large plastic dog box).
They only make noise at the unfamiliar, visitors, stray dogs, etc. The neighbors' dogs bark more often than they do.
If one accidentally gets over a fence, they are retrieved quickly as they are watched 24/7. Our one neighbor has been throwing bread to them so they will run to the fence when she goes out in her back yard.
Just like dogs or any pet, guineas are a product of their environment. My guinea have a very structured life, they know they go out in the morning and come in at night, they know I give them food and water and safety. Because of that safety, others are impressed by how tame they are.
If you want to see these birds in person we have open house on Sundays 10-noon, call 240-580-2228 before arriving as we might be fully booked or as wet weather might mean you won't see much.
[off soapbox]
If there is nothing against keeping guinea fowl in the city regulations, then they should be treated just like (a cat or dog) any pet your neighbor might have.
If they are constantly trespassing call them in to the proper authorities, the Department of Agriculture or Natural Resource Police. If they are making too much noise, call the regular police, (just be careful that your own pets aren't just as noisy).
Don't let your animals free range on other property. [ie. If someone let's their dog crap (without cleaning it up) inside your guinea's yard, make sure you return it to them.
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