Reptilia exploit a large diversity of food resources from plant materials to living mobile prey.
They are among the first tetrapods that needed to drink to maintain their water homeostasis …

Highlights•Understanding sound production mechanisms can enhance investigation of
performance.•Performance ranges of temporal and spectral features vary with production …

Highlights•I explore two factors that can limit sexual trait elaboration: costs and constraints.•I
discuss operational strategies for identifying constraints on sexual traits.•I propose that costs …

Many songbirds sing intensely during the early morning, resulting in a phenomenon known
as the dawn chorus. We tested the hypothesis that male Adelaide's warblers (Setophaga …

Abstract Theory predicts that allometric constraints on sound production should be stronger
for the lower frequencies of vocalizations than for the higher frequencies, which could …

Social learning of vocalizations is integral to song inheritance in oscine passerines.
However, other factors, such as genetic inheritance and the developmental environment …

Oceanic islands share distinctive characteristics thought to underlie a set of parallel
evolutionary trends across islands and taxonomic groups–including life‐history traits …

Many birds emit tonal song syllables even though the sound sources generate sound with
rich upper harmonic energy content. This tonality is thought to arise in part from dynamically …

Animal displays (ie movement-based signals) often involve extreme behaviours that seem to
push signallers to the limits of their abilities. If motor constraints limit display performance …

Variation in the acoustic structure of vocal signals is important to communicate social
information. However, relatively little is known about the features that receivers extract to …