ArticlePest management science2026
Peck or pass? Individual-level testing of a bird-repellent seed coating.
Article in Pest management science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
backgroundCarrion crows (Corvus corone) are a major depredating species of spring crops across European agroecosystems, especially during sowing, but limited effective non-lethal repellents are currently available.
resultsWe assessed the deterrent effect of a bird-repellent seed coating, based on black pepper oleoresin (BPO) and applied to maize seeds, on free-ranging carrion crows. Using a standardized unique-choice test design in an urban context, we recorded the behavior of 45 ringed individuals exposed to natural, purple-dyed and purple BPO-coated maize seeds. Although color alone had no deterrent effect, BPO-coated seeds were largely avoided. Age-related differences in habituation emerged: younger birds (≤2 years) habituated to color cues over time, unlike older birds (≥3 years); all age groups maintained an aversion to BPO-treated seeds.
conclusionOur results underscore the relevance of chemosensory repellents for persistent deterrence and offer a novel and replicable framework for pre-field testing of avian repellents. © 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.