Bear in mind, I'm still waiting on details about this, so I'm only telling you what I know. I responded to this Craigslist ad on Saturday morning: http://grandrapids.craigslist.org/pet/727763983.html
I got a call back from a woman who's originally from the area, and she was calling for her friend. FYI: I e-mailed, and not called, on the ad. I'm stupidly phone shy sometimes. Anyway, this woman's message to me said that these horses were obviously starving and neglected, and the mare looked like she was about to keel over. Her friend (the one who has the horses in her yard) went out and got the horses wormer, and has them enclosed somehow. She said her friend had tried calling the SPCA, the country, the city, and no one was helping her. She said she was going to suggest to her friend to call the local TV station so it would get some coverage. I'm guessing this woman has no clue where these horses came from, and at this point I don't know how much this gal knows about horses at all.
I really want to help out here. I can't offer to house/take care of them, but if this woman has the space enough to keep them protected, then I can go out there and help her out. I'm going to try calling this woman again, and here are ways I think I can help:
-calling local vets and seeing if any of them will assess the horses pro-bono
-asking for hay donations from local farmers/shops
-calling Michigan horse rescues and seeing if they'll take them on
Any other ideas? I'll know more in a little while, but suggestions welcome. Animal cruelty just makes my blood boil.