The incident began on October 22. Results through November 5:
- Scope: Roberts Mountain, Whistler Mountain, Fish Creek HMAs
- Purpose: Pest control, resource enforcement, rancher protection
- Target: Horses
- Type: Planned
- Method: Helicopter
- Category: Cruel and costly*
- Better way: Sterilize mares with pesticide-laced darts*
- Captured: 858, up from 817 on Day 13
- Average daily take: 57.2
- Capture goal: 1,106
- Removal goal: 1,068
- Returned: None
- Deaths: 9, up from 6 on Day 13
- Shipped: 774, up from 668 on Day 13
The location of the trap site was not given.
Gather operations concluded on Day 15 but shipping will continue for another day or two.
A filly was put down on Day 15 because of club feet. Two mares were also dispatched because of blindness.
The death rate is 1.0%. Horses lost in the Day 9 truck rollover are not included in the total.
The capture total includes 338 stallions, 397 mares and 123 foals.
Youngsters represented 14.3% of the animals gathered, suggesting the herd is growing at a rate of 9% per year.
Of the adults, 46.0% were male and 54.0% were female.
Body condition scores ranged from 3 to 5 on Days 14 and 15.
The HMAs and surrounding lands are subject to permitted grazing.
*According to advocates.
Day 15 ended with 75 unaccounted-for animals.
Data quality has been good.
Up to 19 mares will be treated with GonaCon Equine, a fertility control pesticide, before being returned to the range with up to 19 stallions.
Other statistics:
- Forage liberated to date: 10,296 AUMs per year
- Water liberated to date: 8,580 gallons per day
- Forage assigned to livestock: Undetermined
- Horses displaced from Complex by permitted grazing: Undetermined
- True AML: Undetermined
- Stocking rate at new AML: Undetermined
- Horses removed because of drilling and mining: Ask the advocates
Overpopulation means more horses than allowed by plan, not more horses than the land can support. If this was not true, you’d see body condition scores of 3 or less.
The roundup was authorized because the horses have been trying to reclaim some of their food from the ranchers, not because they’re starving.
RELATED: Roberts Mountain Roundup, Day 13.

