The incident started on July 1. Results through July 11:
- Scope: North Lander Complex
- Target: Horses
- AML: 536
- Pre-gather population: 3,035
- True AML: 4,616
- Type: Planned
- Method: Helicopter
- Category: Cruel and costly (according to advocates)
- Better way: Sterilize mares with PZP (according to advocates)
- Goals: Gather 2,766, remove 2,716
- Captured: 1,640, up from 1,317 on Day 9
- Shipped: 1,461, up from 1,138 on Day 9
- Released: None
- Deaths: 10, no change from Day 9
- Average daily take: 149.1
- Unaccounted-for animals: 169
The figures above are based on the daily reports.
The death rate is 0.6%.
The capture total includes 636 stallions, 703 mares and 301 foals.
Youngsters represented 18.4% of the animals gathered, consistent with a herd growth rate of 13% per year.
Land managers often use a growth rate of 20% per year to predict herd sizes and management actions.
Of the adults, 47.5% were male and 52.5% were female.
Body condition scores were not given.
The location of the trap site is not known.
The Complex is subject to permitted grazing. Resources liberated to date:
- Forage: 19,680 AUMs per year
- Water: 16,400 gallons per day
The June 3 schedule indicates that 20 mares will be treated with fertility control pesticides and returned to the range but this is not discussed at the gather page.
The roundup supports three tenets of rangeland management.
RELATED: North Lander Roundup, Day 9.

