Across birds, male age is the most consistent predictor of extra‐pair siring success, yet little
is known about age effects on paternity over the lifetime of individuals. Here, we use data …

Highlights•Many temporal features of Java sparrow song are socially inherited.•Gap
durations are affected by a range of song characteristics.•No evidence that genetics or the …

Highlights•We present a large data set of songs from a wild population of great tits.•It
contains 1.1 M acoustic units from 109 K songs recorded over several years.•It includes …

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 …

In some species, the ability to acquire new vocalizations persists into adulthood and may be
an important mediator of social interactions. While it is generally assumed that vocal …

Senescence is widespread in nature, often resulting in diminishing survival or reproduction
with age, but its role in age-dependent variation in sexual traits is often poorly understood …

Highlights•We tested whether male yodels convey information about age in common
loons.•Dominant frequency of a dominant syllable (Fintro3) in male yodels increased with …

Courtship songs in mice have been investigated to understand the mechanisms and
ecological relevance of vocal communication. There is evidence that courtship song …

Animal signals should consistently differ among individuals to convey distinguishable
information about the signalers. However, behavioral display signals, such as bird song are …

Age-related changes in assessment signals occur in a diverse array of animals, including
humans. Age-related decline in vocal quality in humans is known to affect perceived …