South Steens Roundup, Day 5

The incident began on September 10.  Gather stats through September 14:

  • Target: Horses
  • Type: Planned
  • Method: Helicopter
  • Category: Cruel and costly
  • Captured: 628, up from 525 on Day 3
  • Average daily take: 125.6
  • Capture goal: 500, increased to 750 on Day 3
  • Removal goal: 450, increase not reported
  • Returned: None
  • Deaths: 16, up from 7 on Day 3
  • Shipped: 579, up from 476 on Day 3

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

Nine horses were put down on Day 4 due to pre-existing conditions.

The death rate has increased from 1.3% to 2.5%.

The capture total includes 234 stallions, 274 mares and 120 foals.

Youngsters represented 19.1% of the animals gathered.

Of the adults, 46.1% were male and 53.9% were female.

The herd can’t be growing at a rate of 20% per year with a birth rate of 19% per year.

A better estimate would be 14% per year, assuming a death rate of 5% per year.

Body condition scores were not provided.

The location of the trap site was not disclosed.

The HMA and surrounding lands are subject to permitted grazing.

South Steens HMA Map 08-17-22

Day 5 ended with 33 unaccounted-for animals.

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

Other statistics:

  • Horses allowed by plan (AML): 304
  • Forage assigned to horses: 3,648 AUMs per year
  • Pre-gather population: 1,370
  • Forage liberated to date: 7,536 AUMs per year
  • Water liberated to date: 6,280 gallons per day
  • Forage assigned to livestock: 10,299 AUMs per year (estimated)
  • Horses displaced from HMA by permitted grazing: 858
  • True AML: 1,162
  • Stocking rate at new AML: 8.6 horses per thousand acres
  • Horses displaced from HMA by drilling and mining: Ask the advocates

RELATED: South Steens Roundup, Day 3.

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