South Steens Roundup, Day 3

The incident began on September 10.  Gather stats through September 12:

  • Target: Horses
  • Type: Planned
  • Method: Helicopter
  • Category: Cruel and costly
  • Captured: 525, up from 225 on Day 1
  • Average daily take: 175.0
  • Capture goal: 500
  • Removal goal: 450
  • Returned: None
  • Deaths: 7, up from zero on Day 1
  • Shipped: 476 up from 175 on Day 1

The capture goal has been reached.

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

Five horses were put down on Day 2 due to pre-existing conditions, followed by two more on Day 3.

The death rate is 1.3%.

The capture total includes 194 stallions, 231 mares and 100 foals.

Youngsters represented 19.0% of the animals gathered.

Of the adults, 45.6% were male and 54.4% 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 3 ended with 42 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: 6,300 AUMs per year
  • Water liberated to date: 5,250 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 Begins.

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