We're turning a power line into an insect highway

Scientific concepts / nature phenomena presented

• Power-line right-of-way as habitat

  • Large areas cleared beneath high-voltage power lines are described as unused land that could be repurposed for rewilding, rather than remaining barren.

• Habitat fragmentation and connectivity

  • Population fragmentation is highlighted as a threat to insects (e.g., butterflies) when cities, large monocultures, or commercial forests act as barriers.
  • Power-line corridors are treated as ecological connectivity pathways, helping reduce fragmentation by enabling movement between otherwise separated populations.

• Pollination and gene flow

  • The peacock butterfly is presented as both a beneficiary and a pollinator.
  • It may also help transport genes between plants along the corridor, linking separated plant and butterfly populations.

• Vegetation structure and insect diversity

  • A “layered haircut” approach is used to create a more gradual and varied vegetation profile.
  • This shifts away from rapid overgrowth driven by a few dominant species.
  • The goal is to increase plant structural diversity, supporting a richer insect community.

• Wildlife microhabitats under infrastructure

  • Rock shelters are installed under pylons to provide predator protection and safe refuge for weasels.
  • Wildlife ponds are added to create aquatic breeding and drinking sites for amphibians and reptiles, addressing limited aquatic habitat.

• Species-specific breeding behavior (amphibians)

  • The midwife toad (“Glocklifrosch”) is emphasized:
    • Unique reproduction behavior: males carry eggs on their back and deposit them in water.
    • The new ponds are positioned to support reproduction and lifecycle needs.

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Methodology / approach (three-part plan)

1) Create an “insect highway”

• Avoid fully clearing land or allowing only a few dominant plants to overgrow.
• Use a layered, staged vegetation cut to establish a diverse mix of small and mid-size plants.
• Goal: attract wild bees and butterflies and maintain corridors for movement and feeding.
• Example species discussed: peacock butterfly (also framed as a pollinator supporting plant connectivity).

2) Build rock shelters for terrestrial predators

• Install dozens of rock shelters directly underneath power pylons.
• Purpose: provide safe havens for weasels against predation in open farmland.

3) Establish a network of wildlife ponds

• Create multiple ponds as habitat “oases” for amphibians and reptiles.
• Example species discussed: midwife toad (Glocklifrosch), linked to its reproductive mode that requires water for egg deposition and egg development.

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Researchers / sources featured

• Thomas
  • Leader/developer of the three-part plan
  • Formerly a statistician
  • Member of Pro Natura, Switzerland
• Planet Wild
  • Organization coordinating “Mission 15”
• Pro Natura (Switzerland)
  • Named as Switzerland’s oldest environmental organization
• Feli
  • Planet Wild representative sent to Switzerland in the video
• School kids / local school classmates
  • Participants helping build ponds (not named individually)