Blue Wing Roundup, Day 6

The incident began on August 1.  Gather stats through August 6:

  • Target: Horses and burros
  • Type: Planned
  • Method: Helicopter
  • Category: Cruel and costly
  • Horses captured: None
  • Burros captured: 693, up from 378 on Day 3
  • Average daily take: 0.0 horses, 115.5 burros
  • Capture goal: 200 horses, 800 burros
  • Removal goal: 200 horses, 800 burros
  • Horses returned: None
  • Burros returned: None
  • Horse deaths: None
  • Burro deaths: 6, up from 4 on Day 3
  • Horses shipped: None
  • Burros shipped: 438, up from 108 on Day 3

The figures above are based on the daily reports.

No animals were gathered on Day 6.

Two jacks were put down on Day 5 due to pre-existing conditions.

The burro death rate is 0.9%.

The burro total includes 279 jacks, 358 jennies and 56 foals.

Youngsters represented 8.1% of the burros captured.

Of the adults, 43.8% were male and 56.2% were female.

The herd can’t be growing at a rate of 20% per year with a birth rate of 8% per year.

A better estimate would be 3% per year, assuming a death rate of 5% per year.

The observed percentages of jacks and jennies cannot be attributed to a simple random process centered at 50% males / 50% females.

Abnormal sex ratios and low birth rates are often associated with the Montana Solution but the Blue Wing HMAs are not on the fertility control list in the latest schedule.

Body condition scores were not given.

The location of the trap was not disclosed.

The five HMAs in the Complex are subject to permitted grazing.

Blue Wing Complex Map 07-26-22

Day 6 ended with no unaccounted-for horses and 249 unaccounted-for burros.

Other statistics:

  • AML: 553 horses and 90 burros, equivalent to 598 horses
  • Forage assigned to horses and burros: 7,176 AUMs per year
  • Pre-gather population: 1,695 horses and 1,327 burros, equivalent to 2,359 horses
  • Forage liberated to date: 4,158 AUMs per year
  • Water liberated to date: 3,465 gallons per day
  • Forage assigned to livestock: 9,631 AUMs per year (estimated)
  • Animals displaced from Complex by permitted grazing: 802 horses
  • True AML: 1,355 horses and 90 burros, equivalent to 1,400 horses
  • Stocking rate at new AML: 1.2 horses per thousand acres
  • Horses displaced from Complex by drilling and mining: Ask the advocates

RELATED: Blue Wing Roundup, Day 3.

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