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April 25, 2026Conservation PhysiologyOpen Access

Assessing animal welfare in invasive bird management: evidence for reduced stress hormones with lethal shooting

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Authors

ILIsabel López‐RullUniversidad Rey Juan CarlosJBJon Blanco-GonzálezUniversidad Rey Juan CarlosDGDiego Gil

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Implication

Randomized trial assesses HPA response in invasive birds, suggesting lethal shooting reduces stress compared to trapping.

Key Points

  • The aim is to assess the HPA response of monk parakeets to different control methods, particularly shooting versus live trapping.
  • 63 monk parakeets were assigned to groups for shooting, baseline, or live trapping–confinement.
  • Plasma corticosterone (CORT) levels were measured post-capture at different time points.
  • Statistical analyses used a generalized linear model with a gamma error distribution.
  • CORT levels in shot parakeets were similar to baseline (no stress response), indicating rapid death.
  • Live-trapped and confined birds showed significantly elevated CORT levels due to prolonged stress.
  • The logistic model described CORT dynamics, with levels rising and stabilizing under stress until the stressor ceased.

Cite This Study

López‐Rull et al. (2026) studied this question.

synapsesocial.com/papers/69ec5a2588ba6daa22dabb80https://doi.org/10.1093/conphys/coag025
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Also Consider

Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1STRESS IN FREE-RANGING MAMMALS: INTEGRATING PHYSIOLOGY, ECOLOGY, AND NATURAL HISTORY2005 · 460 citations
  2. 2A review of nonlethal and lethal control tools for managing the damage of invasive birds to human assets and economic activities2022 · 44 citations
  3. 3Global Biodiversity Scenarios for the Year 21002000 · 9,358 citations