Challis Roundup Day 4

The incident began on February 20.  Gather stats through February 23:

  • Target: Horses
  • Type: Planned
  • Method: Bait
  • Captured: 15
  • Average daily take: 3.8
  • Capture goal: 70
  • Removal goal: 39
  • Returned: None
  • Deaths: None
  • Shipped: 13

The cumulative total includes 5 stallions, 8 mares and 2 foals.

Youngsters represented 13.3% of the horses captured, consistent with a growth rate of 8% per year.  Land managers often use a rate of 20% per year to predict herd sizes.

Of the adults, 38.5% were stallions and 61.5% were mares.

Body condition scores ranged from three to five.

The location of the trap site within the HMA was not provided.

Challis HMA Map 11-11-21

Day 4 ended with two unaccounted-for animals.

The number of horses removed to date is 15.

Mares returned to the HMA will be treated with fertility control of unspecified type.

Other statistics:

  • AML: 253
  • Forage assigned to horses: 3,036 AUMs per year
  • Pre-gather population: 224
  • Forage liberated to date: 180 AUMs per year
  • Water liberated to date: 150 gallons per day
  • Forage assigned to livestock: 9,756 AUMs per year (estimated)
  • Horses displaced from HMA by permitted grazing: 813
  • True AML: 1,066
  • Stocking rate at new AML: 6.9 wild horses per thousand public acres
  • Horses displaced from HMA by drilling and mining: Ask the advocates

RELATED: Challis Roundup in Progress.

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