The incident began on July 17. Gather stats through August 21:
- Target: Horses
- Type: Planned
- Method: Helicopter
- Category: Cruel and costly
- Captured: 1,585, up from 1,416 on Day 34
- Average daily take: 44.0
- Capture goal: 1,900
- Removal goal: 1,800
- Returned: None
- Deaths: 23, up from 21 on Day 34
- Shipped: 1,495, up from 1,336 on Day 34
The figures above are based on the daily reports, not the totals posted by the BLM.
A stallion died on Day 36 of a broken neck and a mare was put down because of a missing eye.
The death rate is 1.5%.
The capture total includes 549 stallions, 771 mares and 265 foals.
Youngsters represented 16.7% of the animals gathered.
Of the adults, 41.6% were male and 58.4% were female.
The herd can’t be growing at a rate of 20% per year with a birth rate of 17% per year.
A better estimate would be 12% per year, assuming a death rate of 5% per year.
The observed percentages of stallions and mares cannot be attributed to a simple random process centered at 50% males / 50% females.
Abnormal sex ratios are often found in herds subject to the Montana Solution but not double-digit birth rates.
Body condition scores were not provided.
The location of the trap was not disclosed.
The Complex and surrounding lands are subject to permitted grazing.
Day 36 ended with 67 unaccounted-for animals.
The capture goal is 83% complete.
Mares treated with fertility control may be returned to the area at a later date.
- Horses allowed by plan (AML): 821
- Forage assigned to horses: 9,852 AUMs per year
- Pre-gather population: 3,475
- Forage liberated to date: 19,020 AUMs per year
- Water liberated to date: 15,850 gallons per day
- Forage assigned to livestock: 49,188 AUMs per year (estimated)
- Horses displaced from Complex by permitted grazing: 4,099
- True AML: 4,911
- Stocking rate at new AML: 3.0 horses per thousand acres
- Horses displaced from Complex by drilling and mining: Ask the advocates
RELATED: Triple B Roundup, Day 34.