Rock Springs Roundup Day 96

Operations resumed on January 6.  Gather stats through January 10:

  • Type: Planned
  • Method: Helicopter
  • Horses captured: 3,552, up from 3,355 on Day 93
  • Average daily take: 37.0
  • Capture goal: 4,400
  • Removal goal: 3,500
  • Returned: 488, no change from Day 93
  • Deaths: 24, up from 20 on Day 93
  • Shipped: 3,152, up from 2,877 on Day 93

Four horses were put down on Day 96, lifting the death rate to 0.7%.

The total includes 1,386 stallions, 1,440 mares and 726 foals.  The gather page shows 1,383 stallions and 1,428 mares.

Foals represented 20.4% of the horses captured.  Of the adults, 49.0% were male and 51.0% were female.

A birth rate of 20% implies a growth rate of 15% per year, assuming a 5% death rate.

Body condition scores were not reported.

Gather activity has shifted to White Mountain and Little Colorado.

Rock Springs HMAs 10-13-21

If 3,549 have been captured, as stated at the gather page, 3,152 have been shipped and 24 have died, the maximum number of horses that could be returned to the five HMAs is 3,549 – 3,152 – 24 = 373, not 488 as stated in the cumulative totals.

The numbers don’t balance.

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: 42,624 AUMs per year
  • Water liberated to date: 35,520 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 93.

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