Humming in bears: a peculiar sustained mammalian vocalization

@article{Peters2010HummingIB,
  title={Humming in bears: a peculiar sustained mammalian vocalization},
  author={Gustav Sigismund Peters and Megan A. Owen and Lynn L. Rogers},
  journal={Acta Theriologica},
  year={2010},
  volume={52},
  pages={379-389}
}
A peculiar sustained vocalization has long been known under various names in several bear species but not been studied in sufficient detail. Based on a critical survey of the relevant literature, analyses of tape recordings and pertinent own observations we tried to clarify the presence of this vocalization in the species of the Ursidae as well as its structural characteristics and specific mode of sound production. To avoid confusion with other vocalization types we introduce the term humming… 
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References

SHOWING 1-10 OF 103 REFERENCES
Purring and similar vocalizations in mammals
TLDR
Vocalizations very similar in structure occur in matching behavioural contexts in other families of the Carnivora and several other mammalian orders and most of these vocalization types are likely to have evolved convergently.
On the structure of friendly close range vocalizations in terrestrial carnivores (Mammalia: Carnivora: Fissipedia)
Sound spectrographic analyses were made of friendly close ränge vocalizations of species of all families of terrestrial carnivores (Canidae, Felidae, Hyaenidae, Mustelidae, Procyonidae, Ursidae,
An analysis of the chuffing vocalization in the Polar bear (Ursus maritimus)
In an effort to determine the function of a low intensity repetitive call termed chuffing, quantitative data were analyzed for behavioural associations and contingencies, and several hypotheses were
STRUCTURE AND FUNCTION OF RED FOX VULPES VULPES VOCALISATIONS
TLDR
Call types that were structurally suited to agonistic and contact functions were found to be significantly more common during the winter, the time of mating and dispersal, when foxe...
African wild dog pup vocalizations with special reference to Morton's model
TLDR
The vocal repertoire is presented, including the use of repetitive and mixed sounds, and the extent to which the emerging sound system of Lycaon conforms to predicted design features of Morton's (MS) motivation-structural rules is investigated.
ON THE VOCAL BEHAVIOR DURING THE ESTROUS PERIOD OF THE GIANT PANDA, AILUROPODA MELANOLEUCA
TLDR
Several single calls, especially the bleat, can be used as the indicator of the physiological condition for mating in the captive giant panda and may be classified into three categories.
Acoustic Communication by Fissiped Carnivores
TLDR
It is probably no accident that wolf howling—unlike other acoustic signals of carnivores—is one of the best-studied mammalian vocalizations.
Vocal Repertoire in the European Badger (Meles meles): Structure, Context, and Function
Vocalizations and behaviors of wild European badgers ( Meles meles ) were recorded using infrared video surveillance systems in Wytham Woods, Oxfordshire, United Kingdom. A quantitative acoustic
...
1
2
3
4
5
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