Directionality
- Echo-acoustic scanning with noseleaf and ears in phyllostomid bats
Highlighted Article: Echolocating bats move their noseleaf (for sound emission) and their ears for fast and directed echo-acoustic exploration of their surroundings.
- Big brown bats (Eptesicus fuscus) emit intense search calls and fly in stereotyped flight paths as they forage in the wild
Summary: Field recordings of Eptesicus fuscus reveal highly intense source levels and stereotypic flight behaviour, potentially as a strategy to optimize foraging efficiency by minimizing sensory processing load.
- Auditory modulation of wind-elicited walking behavior in the cricket Gryllus bimaculatus
Summary: Crickets alter the orientation of their wind-elicited walking behavior and response threshold after exposure to a 10 kHz sound stimulus, suggesting a multisensory interaction between the auditory and cercal sensory systems.
- Amazon river dolphins (Inia geoffrensis) use a high-frequency short-range biosonar
Highlighted Article: Amazon river dolphins inhabit an acoustically complex habitat, where they employ a short-range biosonar with source parameters not predictable from body size alone, suggesting that habitat is an important evolutionary co-driver of toothed whale biosonar.
- Single-click beam patterns suggest dynamic changes to the field of view of echolocating Atlantic spotted dolphins (Stenella frontalis) in the wild
Summary: Free-ranging Atlantic spotted dolphins dynamically adjust their sonar beam width to expand their acoustic field of view when approaching targets, potentially decreasing the risk of prey evasion.