Results 31 to 40 of about 21,978 (259)

Echolocation calls and communication calls are controlled differentially in the brainstem of the bat Phyllostomus discolor

open access: yesBMC Biology, 2005
Background Echolocating bats emit vocalizations that can be classified either as echolocation calls or communication calls. Neural control of both types of calls must govern the same pool of motoneurons responsible for vocalizations.
Schuller Gerd, Fenzl Thomas
doaj   +1 more source

Unusual echolocation behaviour of the common sword-nosed bat Lonchorhina aurita: an adaptation to aerial insectivory in a phyllostomid bat? [PDF]

open access: yesRoyal Society Open Science, 2019
Most insectivorous bat species in the Neotropical family Phyllostomidae glean insects from ground, water or vegetation surfaces. They use similar and stereotypical echolocation calls that are generally very short (less than 1–3 ms), multi-harmonic and ...
Gloria Gessinger   +4 more
doaj   +1 more source

Harbour porpoises (Phocoena phocoena) and wind farms: a case study in the Dutch North Sea [PDF]

open access: yes, 2011
The rapid increase in development of offshore wind energy in European waters has raised concern for the possible environmental impacts of wind farms. We studied whether harbour porpoise occurrence has been affected by the presence of the Dutch offshore ...
Brasseur, S.M.J.M.   +6 more
core   +2 more sources

Echolocation in Oilbirds and swiftlets

open access: yesFrontiers in Physiology, 2013
The discovery of ultrasonic bat echolocation prompted a wide search for other animal biosonar systems, which yielded, among few others, two avian groups.
Signe eBrinkløv   +2 more
doaj   +1 more source

Open‐source workflow approaches to passive acoustic monitoring of bats

open access: yesMethods in Ecology and Evolution, 2023
The affordability, storage and power capacity of compact modern recording hardware have evolved passive acoustic monitoring (PAM) of animals and soundscapes into a non‐invasive, cost‐effective tool for research and ecological management particularly ...
Signe M. M. Brinkløv   +6 more
doaj   +1 more source

Hearing Characteristics and Doppler Shift Compensation in South Indian CF-FM Bats [PDF]

open access: yes, 1980
1. Echolocation pulses, Doppler shift compensation behaviour under laboratory conditions and frequency response characteristics of hearing were recorded inRhinolophus rouxi, Hipposideros speoris andHipposideros bicolor. 2.
A. Brosset   +13 more
core   +1 more source

Atmospheric humidity affects global variation of bat echolocation via indirect effects

open access: yesFrontiers in Ecology and Evolution, 2022
The peak frequency of bat echolocation is a species-specific functional trait linked to foraging ecology. It is tailored via evolution to suit conditions within the distribution range of each species, but the evolutionary drivers are not yet well ...
Miika Kotila   +6 more
doaj   +1 more source

Male sperm whale acoustic behavior observed from multipaths at a single hydrophone [PDF]

open access: yes, 2005
Sperm whales generate transient sounds (clicks) when foraging. These clicks have been described as echolocation sounds, a result of having measured the source level and the directionality of these signals and having extrapolated results from biosonar ...
Adam, Olivier   +3 more
core   +4 more sources

A glimpse into the foraging and movement behaviour of Nyctalus aviator; a complementary study by acoustic recording and GPS tracking

open access: yesRoyal Society Open Science, 2023
Species of open-space bats that are relatively large, such as bats from the genus Nyctalus, are considered as high-risk species for collisions with wind turbines (WTs).
Yoshifumi Niga   +5 more
doaj   +1 more source

Audition in vampire bats, Desmodus rotundus [PDF]

open access: yes, 1990
1. Within the tonotopic organization of the inferior colliculus two frequency ranges are well represented: a frequency range within that of the echolocation signals from 50 to 100 kHz, and a frequency band below that of the echolocation sounds, from 10 ...
A Guppy   +21 more
core   +1 more source

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