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Open research questions in Animal Vocal Communication and Behavior

146 unresolved questions extracted from the limitations and future-work sections of 662 Animal Vocal Communication and Behavior papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The study did not investigate how song learning would impact the levels of inter-areal coactivation during silent periods, - The study did not use causal pathway manipulations, - The sample size was limited to eight adult, male zebra finches

    Song decorrelates cortico–basal ganglia ensembles in zebra finches · 2026 · DOI

  • Repeating the recordings in combination with causal pathway manipulations could help clarify inter-areal mechanisms underlying singing and social modulation, - Investigating how song learning would impact the levels of inter-areal coactivation during silent periods

    Song decorrelates cortico–basal ganglia ensembles in zebra finches · 2026 · DOI

  • There is a lack of understanding of the significance of birds in Q'eqchi' Maya culture. Prior work has not fully explored the role of birds in guiding hunting practices and agriculture in Q'eqchi' culture.

    A Forest of Signs: Avian Warnings and Messaging among the Q’eqchi’ Maya · 2026 · DOI

  • Japanese quail (Coturnix japonica) rely on an extensive vocal repertoire to coordinate social behaviour and respond to predation risk, yet how individual call types are modulated by predator identity remains poorly characterized.

    Predator type shapes call-type composition and post-threat vocal dynamics in Japanese quail (Coturnix japonica): a pilot case-series · 2026 · DOI

  • Artificial light at night (ALAN) can alter the daily timing of birds activity, but the immediate effects of brief nocturnal illumination on vocal behaviour remain poorly understood.

    Short-term effects of experimental artificial light at night on nocturnal vocal activity in a temperate bird community · 2026 · DOI

  • Automated acoustic recognition can be a good solution for monitoring arboreal, soniferous insects, such as cicadas, and the acoustic biology of cicadas in Australia is understudied, especially using automated methods.

    Automated acoustic classifiers provide insights into calling patterns of cicadas in tropical Australia · 2026 · DOI

  • Mitigation options and research priorities are outlined, with attention to under-studied tropical regions.

    Anthropogenic Noise and Animal Behaviour: A Review of Effects on Communication, Foraging, Physiology, and Fitness · 2026 · DOI

  • We recently identified voice-selective patches in the marmoset auditory cortex, but whether these regions specifically encode conspecific vocalizations over heterospecific ones-and whether they share a similar functional organization with those of humans and macaques-remains unknown.

    Functional organization of voice patches in marmosets and cross-species comparisons with macaques and humans · 2025 · DOI

  • 6 , 7 However, their acoustics are poorly described, and by what biophysical mechanism they are produced remains unknown.

    Zebra finches produce soft laryngeal whistles during thermal panting that are not adaptive vocal signals · 2025 · DOI

  • 11 Although river noise has been linked to the evolution of multimodal displays 14 , 15 and shifts 16 in torrent frogs, examples from other taxa are lacking.

    Stream noise induces song plasticity and a shift to visual signals in a riverine songbird · 2025 · DOI

  • 12 , 13 However, direct evidence for noise-induced shifts between sensory modalities—termed "multimodal shift"—remains scarce.

    Stream noise induces song plasticity and a shift to visual signals in a riverine songbird · 2025 · DOI

  • We found that BirdNET performance varied widely depending on parameter settings (0.

    BirdNET can be as good as experts for acoustic bird monitoring in a European city · 2025 · DOI

  • While optimising the parameter setting of the algorithm could be an alternative strategy, the effect of parameter settings on the algorithm's performance is not well understood.

    BirdNET can be as good as experts for acoustic bird monitoring in a European city · 2025 · DOI

  • Together these findings provide strong evidence that riflemen vocally converge, and though the mechanism still remains to be determined, they may also suggest that this vocal convergence is the result of rudimentary vocal learning abilities.

    Vocal convergence and social proximity shape the calls of the most basal Passeriformes, New Zealand Wrens · 2024 · DOI

  • While early memory acquisition phases are understood, long-term storage and retrieval remain unclear.

    Functional MRI of imprinting memory in awake newborn domestic chicks · 2024 · DOI

  • While it is well-known that adult songbirds sing as part of their mating rituals, the functions of singing behavior outside of reproductive contexts remain unclear.

    Daily singing of adult songbirds functions to maintain song performance independently of auditory feedback and age · 2024 · DOI

  • 3 , 4 , 5 While experimental studies on lab-reared birds have shown the existence of within-species learning predispositions, 6 , 7 , 8 , 9 , 10 it remains unclear whether and how learning predispositions influence song acquisition in the wild.

    Translocated wild birds are predisposed to learn songs of their ancestral population · 2024 · DOI

  • As there is very limited information on non-human animals, the objective of this review is to highlight what is known about these processes from human biological and comparative perspectives and stimulate future research on using music to improve animal welfare.

    Music and Emotions in Non-Human Animals from Biological and Comparative Perspectives · 2024 · DOI

  • Yet, the comprehensive impact of this sampling approach on VAR estimation remains insufficiently explored.

    Evaluating community-wide temporal sampling in passive acoustic monitoring: A comprehensive study of avian vocal patterns in subtropical montane forests · 2024 · DOI

  • Broad frequency ranges of insect sounds. Limited training data for deep learning classifiers. Background noise or other species' sounds in audio files.

    A dataset of insect sounds from 459 species for bioacoustic machine learning · 2026 · DOI

  • The dataset is limited to 459 species, which may not be representative of all insect species. The dataset may contain background noise or other species' sounds, which can affect classification performance. The paper only evaluates two deep learning classifiers, which may not be the best approaches for this task.

    A dataset of insect sounds from 459 species for bioacoustic machine learning · 2026 · DOI

  • The paper identifies a gap in the understanding of why many communication signals across the animal kingdom focus on a narrow 0.5-4 Hz frequency band. The paper notes that the definition of isochrony varies in the published literature, which poses a challenge to the study.

    A widespread animal communication tempo may resonate with the receiver’s brain · 2026 · DOI

  • The taxonomic status of gentoo penguin lineages has been widely debated. Previous studies have not provided a comprehensive understanding of gentoo penguin lineages.

    Integrative evidence reveals adaptive divergence and speciation in gentoo penguins · 2026 · DOI

  • Genome-wide SNP data from population splits and divergence were analyzed using ASTRAL-III and StarBeast3 (Douglas et al. 2022), but the study does not evaluate how phylogenetic inference results vary under different multispecies coalescent parameterizations or sensitivity to clock model assumptions. Comparative analysis across relaxed clock models and alternative species tree topologies with quantified uncertainty intervals is needed to robustly date speciation events.

    Integrative evidence reveals adaptive divergence and speciation in gentoo penguins · 2026 · DOI

  • The gap is the lack of high-throughput neuronal projection data at single-neuron resolution across species. The gap is the lack of quantitative testing of models of motor cortical divergence between species.

    Specific expansion of motor cortical projections in a singing mouse · 2026 · DOI

Most-cited papers in Animal Vocal Communication and Behavior

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146 open questions have been extracted from the limitations and future-work passages of 662 Animal Vocal Communication and Behavior papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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