MEDORA, N.D. (AP) — National organizations working to save mustangs are trying to help find homes for wild horses that will be rounded up at Theodore Roosevelt National Park in North Dakota and sold at auction.

The Cloud Foundation and the Legacy Mustang Preservation have joined forces in Operation Badlands Mustang Rescue. The Forum reports volunteers are spreading the word of the Sept. 28 auction of more than 100 horses in a campaign to spare them from slaughter.

Horse advocates earlier started Facebook campaigns in the hopes of placing the horses with caring buyers.

The park maintains a demonstration herd of what it calls feral horses to commemorate the wild horses that roamed the badlands when Theodore Roosevelt ranched in the area during the 1880s. Officials say the herd has grown too large.

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