Triple B Roundup Ends

A statement at the gather page yesterday said gather ops concluded on August 24 but results for August 25 were not posted until this morning.

Operations ended with 1,897 horses captured, 1,849 shipped, 25 released and 23 dead.

The were no unaccounted-for animals.

The death rate was 1.2%.

Data quality was good.

The capture goal was 1,900 and the removal goal was 1,800.

The number of horses removed was 1,872.  Mares treated with fertility control may be returned to the Complex at a later date, bringing the figure closer to target.

The capture total included 654 stallions, 908 mares and 335 foals.

Youngsters represented 17.7% of the animals gathered.

Of the adults, 41.9% were male and 58.1% were female.

The observed percentage of foals suggests the herd was growing at a rate of 13% per year, not 20% per year, a rate used by land managers to predict herd sizes and justify resource enforcement actions.

The percentages of stallions and mares cannot be explained by a simple random process centered at 50% males / 50% females.

Abnormal sex ratios are common in herds subject to the Montana Solution but not double-digit birth rates.

The Complex is managed primarily for livestock.

RELATED: Triple B Roundup Announced.

UPDATE: Up to 50 mares will returned to the Complex, according to today’s news release, and the event will be open to public observation.

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