Rock Springs Roundup Day 52

The incident began on October 7.  Gather stats through November 27:

  • Type: Planned
  • Method: Helicopter
  • Horses captured: 2,262, up from 2,038 on Day 47
  • Average daily take: 43.5
  • Capture goal: 4,400
  • Removal goal: 3,500
  • Returned: 46, up from 1 on Day 47
  • Deaths: 9, up from 8 on Day 47
  • Shipped: 2,096, up from 1,970 on Day 47

Helicopters did not fly on Days 49, 50 and 51.

A horse was euthanized on Day 49 due to a leg injury.  The death rate is 0.4%.

Foals represented 20.3% of the horses captured.  Of the adults, 48.9% were male and 51.1% were female.

Body condition scores were not reported.

Forty five stallions were released on Day 51, which may be intended to increase the number of males relative to females.  The practice, known as sex ratio skewing, slows reproduction and keeps the resource scales tipped in favor of the public-lands ranchers for longer periods of time.

The advocates prefer PZP darting.

Gather activity continued at Salt Wells Creek.  Five HMAs are involved in the roundup.

Rock Springs HMAs 10-13-21

Day 52 ended with 111 unaccounted-for animals.

Other statistics:

  • AML: 2,165 (across five HMAs)
  • Forage assigned to horses: 25,980 AUMs per year
  • Pre-gather population: 5,105
  • Forage liberated to date: 26,592 AUMs per year
  • Water liberated to date: 22,160 gallons per day
  • Forage assigned to livestock: 191,791 AUMs per year (estimated)
  • Horses displaced from HMAs by livestock: 15,982 (32% of off-range holding)
  • True AML: 18,147

RELATED: Rock Springs Roundup Day 47.

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