Triple B Roundup, Day 38

The incident began on July 17.  Gather stats through August 23:

  • Target: Horses
  • Type: Planned
  • Method: Helicopter
  • Category: Cruel and costly
  • Captured: 1,854, up from 1,585 on Day 36
  • Average daily take: 48.8
  • Capture goal: 1,900
  • Removal goal: 1,800
  • Returned: None
  • Deaths: 23, no change from Day 36
  • Shipped: 1,616, up from 1,495 on Day 36

The figures above are based on the daily reports, not the totals posted by the BLM.

The death rate is 1.2%.

The capture total includes 638 stallions, 891 mares and 325 foals.

Youngsters represented 17.5% of the animals gathered.

Of the adults, 41.7% were male and 58.3% were female.

The herd can’t be growing at a rate of 20% per year with a birth rate of 18% per year.

A better estimate would be 13% 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.

Triple B Complex Map 07-11-22

Day 38 ended with 215 unaccounted-for animals.

The capture goal is 98% complete.  Operations will probably conclude this week.

Mares treated with fertility control may be returned to the area at a later date.

Other statistics:

  • Horses allowed by plan (AML): 821
  • Forage assigned to horses: 9,852 AUMs per year
  • Pre-gather population: 3,475
  • Forage liberated to date: 22,248 AUMs per year
  • Water liberated to date: 18,540 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 36.

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