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69
Mostly True Great Plains

In 1875, 12 trillion Rocky Mountain locusts spread across the Great Plains, weighing 27.5 million tons, stripping plants, and even eating clothes off farmers.

The claims about the Rocky Mountain locust swarm of 1875 are largely supported by historical records and estimates. The immense number and weight of the locusts are consistent with documented historical accounts of locust swarms. Furthermore, records indicate that the locusts did strip plants and even damaged clothing, although the exact numbers are estimates. No contradictions were found in the evidence, although the nature of historical estimates means some uncertainty remains.

June 12, 2026 Language: en 4 claims analyzed

Individual Claims

69
Mostly True historical
In 1875, an estimated 12 trillion Rocky Mountain locusts spread across 198,000 square miles of the Great Plains.
While precise counts cannot be confirmed, historical estimates, such as those mentioned in sources like Wikipedia and alternate history forums, suggest the swarm size and area coverage were immense.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 75
Web Consensus Weight 50
Source Quality Score 65
Source Quality Weight 25
Llm Reasoning Score 75
Llm Reasoning Weight 25
Weighted Total 69
Evidence Summary 2 web sources support historical swarm size and range estimates.
69
Mostly True statistical
The locusts weighed around 27.5 million tons.
The weight estimate was noted in Wikipedia, aligning with known effects of large swarms. As these are historical estimates, exact accuracy is debated, but the magnitude is not disputed.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 70
Web Consensus Weight 50
Source Quality Score 65
Source Quality Weight 25
Llm Reasoning Score 70
Llm Reasoning Weight 25
Weighted Total 69
Evidence Summary 1 web source (Wikipedia) supports the weight estimate.
74
Mostly True historical
They stripped all plant life.
Historical records confirm locusts stripped vegetation during plagues. The severity of plant damage is well-documented.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 80
Web Consensus Weight 50
Source Quality Score 75
Source Quality Weight 25
Llm Reasoning Score 80
Llm Reasoning Weight 25
Weighted Total 74
Evidence Summary Multiple sources confirm widespread plant destruction by locusts.
64
Mostly True weird
They even ate clothes off farmers.
There are historical accounts suggesting locusts damaged clothing. While unusual, evidence from medium-reliability sources supports it.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 65
Web Consensus Weight 50
Source Quality Score 60
Source Quality Weight 25
Llm Reasoning Score 65
Llm Reasoning Weight 25
Weighted Total 64
Evidence Summary Historical accounts suggest clothing damage by locusts.

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