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# Bats and birds are not interchangeable pest-control allies in fruit orchards
- URL: https://intelligence.wildlandseco.com/2026-09-15-birds-bats-orchard-pest-control/
- Published: 2026-09-15T14:01:41.000Z
- Updated: 2026-09-15T14:01:41.000Z
- Description: Dietary DNA networks in Spanish apple and blueberry systems found bats more directly linked to crop pests, while birds more often fed through intraguild pathways that can complicate simple ‘more predators is better’ assumptions.
- Author: Benjamin Worlund
- Tags: orchard ecology, biological control, bats, birds, trophic networks, DNA metabarcoding, Land, Wildlife, Methods, #ecological-intelligence, #brief-2026-09-15, #global-radar, #peer-reviewed, #geo-europe

Evidence

Peer-reviewed

Geography

Asturias, Spain

System

Apple and blueberry orchards

## WHAT THE EVIDENCE SAYS

Researchers used dietary DNA metabarcoding to build tri-trophic networks linking birds and bats, spiders and insect pests in apple and blueberry crops. The networks separated birds and bats into different prey modules: bats tended to be more directly connected to pests, while birds more frequently showed intraguild predation on arthropod natural enemies. Among birds in apple orchards, higher abundance increased direct pest predation, whereas greater insectivory favored intraguild predation.

## WHY IT MATTERS / OUR READ

Functional labels such as ‘insectivore’ can obscure who is actually eating whom. The management signal is to treat natural pest control as a food-web problem: predator identity, abundance and interaction pathways matter, and combining complementary predator groups may perform differently from simply maximizing predator richness.

## CAVEATS / UNCERTAINTY

Diet metabarcoding and network structure show feeding relationships, not realized crop yield, pest suppression or pesticide reduction. Sampling periods and spatial coverage differed among predator groups, and the authors’ management recommendation should be tested against orchard-scale outcomes before being generalized.

## SOURCE

Journal of Applied Ecology · Original evidence  
[View original evidence ↗](https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2664.70566?ref=intelligence.wildlandseco.com)

From the Morning Brief · 2026-09-15

[Read the full Morning Brief →](https://intelligence.wildlandseco.com/morning-brief-2026-09-15/)