The incident began on July 17. Gather stats through August 6:
- Target: Horses
- Type: Planned
- Method: Helicopter
- Category: Cruel and costly
- Captured: 747, up from 735 on Day 19
- Average daily take: 35.6
- Capture goal: 1,900
- Removal goal: 1,800
- Returned: None, no change from Day 19
- Deaths: 16, no change from Day 19
- Shipped: 712, up from 674 on Day 19
The figures above are based on the daily reports.
No horses were gathered on Day 21 due to heavy rains.
The death rate is 2.1%.
The capture total includes 263 stallions, 356 mares and 128 foals.
Youngsters represented 17.1% of the animals gathered.
Of the adults, 42.5% were male and 57.5% 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 given.
The location of the trap was not disclosed.
The Complex and surrounding lands are subject to permitted grazing.
Day 21 ended with 19 unaccounted-for animals.
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: 8,964 AUMs per year
- Water liberated to date: 7,470 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 19.