Many morphological, behavioral, physiological, and life-history traits covary across the
biological scales of individuals, populations, and species. However, the processes that …

ABSTRACT The Acoustic Adaptation Hypothesis (AAH) predicts that acoustic signals
emitted at sites with greater vegetation density should have spectral and temporal …

Bioacoustic analyses of animal vocalizations are predominantly accomplished through
manual scanning, a highly subjective and time-consuming process. Thus, validated …

Certain vocal signals can be difficult or challenging to produce due to constraints on vocal
mechanics. In the case of birdsong, both body size and beak morphology have been shown …

Animals make calls to give conspecifics information about themselves. Based on these calls,
the receiver makes decisions that affect survival and reproduction. However, not all of the …

Bird songs are considered a sexually selected trait that can reflect the individual health of
males as well as the vitality of potential mates and their competitors. Vocalization features …

Acoustic characteristics reflect male quality and play a role in female mate choice. Thus, the
frequency of vocalizations and temporal characteristics are often related to body size within …

Empirical descriptions of vocal behaviour in avian communication are important in
understanding its meaning and role in shaping the social and genetic relationships among …

Animal communication is a key feature of intra-and inter-specific interactions in nature.
Vocalizations and plumage coloration are two of the most exploited signaling pathways …

The analysis of intra-specific geographical variation is central to the study of the evolutionary
and speciation processes, providing insights into the mechanisms leading to current …