Members of the Rocky Mountain Bison Association (RMBA) are invited to submit classified ads for publication on our website. Whether you are selling breeding stock, marketing hay, hiring seasonal help, or advertising equipment, our classifieds connect you with fellow ranchers and industry partners who understand your needs.
FOR SALE: 15 Yearling Heifers – 2024 Born
Mosquito Park Enterprises LLC • Vivian, South Dakota
Mosquito Park Enterprises LLC is offering 15 high-quality 2024-born yearling heifers from a diverse, purpose-built genetic program. With three geographically separated herds, Mosquito Park Enterprises has been developing and strengthening its genetic base for decades.
Yellowstone genetics incorporated through:
2 purchased Yellowstone bulls (2017)
4 purchased Yellowstone bulls (2018)
5 purchased Yellowstone bulls (2021)
Additional diversity from 5 bulls with Castlerock bloodlines
Dam lines sourced from respected herds across the industry:
Custer State Park, KenMar Ranch, Slim Buttes Ranch, Turner Bad River Ranch, and Mosquito Park Enterprises
Handling & Management
At Mosquito Park Enterprises, low-stress handling and intentional, planned rotational grazing are core management practices. These heifers are raised with consistent access to high-quality forage, clean water, and calm handling, resulting in sound temperament and reliable performance.
They are also:
Cake-truck trained
Accustomed to ATVs/UTVs and pickups
Used to following through open gates on long pasture moves and multi-paddock rotations
Provided minerals using range cake or mineral tires (season-dependent) + salt blocks year-round
Weights & Health
Average wean weight (Oct 2024): 395 lbs
Average weight (Oct 2025): 644 lbs
Official calfhood vaccinated
Identified with dangle tags + USDA EID tags
Worked and vaccinated on October 16, 2025 with:
Anthrax, Mycoplasma, Virashield 6 VL5, injectable Dectomax
Currently on mixed feed ration + grass hay
Price
$3,200/head
Buyer is responsible for any veterinary fees required for entry into their state.
Contact
Christopher – 605-545-2132 (call or text)
How to Submit Your Classified Ad
Please email all classified ad requests to: info@bisonranchers.com
Include the following information in your email:
- Your full name
- Ranch or business name
- Phone number and/or website
- Preferred contact method (phone, email, etc.)
- Ad category, such as:
- Bison for Sale
- Bison Wanted
- Breeding Stock
- Equipment & Supplies
- Land & Pasture
- Employment Opportunities
- Other (please specify)
- Ad headline (a short, clear title for your listing)
- Ad text
- Photos or logos you’d like included (optional)
Example Ad:
Bison Wanted - Sheridan, WY
Cute bison gal looking for a few free bison to add to her herd in Sheridan, WY. Won't take just anything, but also has a soft spot for all bison (so, she'll take anything). Might need to sneak them past the husband - but she'll handle that. If you have a bison for Jen, please call her at ###-###-####.