Results 161 to 170 of about 3,855 (196)
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Yawning and thermoregulation in budgerigars, Melopsittacus undulatus
Animal Behaviour, 2009Yawning is a widespread behavioural response expressed in all classes of vertebrates. There is, however, little agreement on its biological significance. One current hypothesis states that yawning serves as a thermoregulatory mechanism that occurs in response to increases in brain and/or body temperature. The brain-cooling hypothesis further stipulates
Andrew C. Gallup +2 more
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Behavioral audiometry with the parakeet Melopsittacus undulatus
The Journal of the Acoustical Society of America, 1973A technique which permits rapid determination of behavioral audiometric thresholds for pure tone in the parakeet (Melopsittacus undulatus) is described. A restrained bird was trained by avoidance conditioning and its threshold determined for 10 frequencies between 0.25 and 8.5 kHz.
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The Electronic Digital Computer and Melopsittacus Undulatus
Interfaces, 1984A unique computer program aids in producing superior specimens of Melopsittacus Undulatus—a parakeet native to Australia. The activity of breeding and exhibiting livestock has a worldwide following, but before this program the mating decision was largely intuitive.
H. Harrison, A. Doyle
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Critical bands in the parakeet (Melopsittacus undulatus)
Journal of Comparative Physiology ? A, 1978Critical bands (CBs) were measured in the parakeet by obtaining masked thresholds for a pure tone in the presence of noise bands of varying bandwidth. Six test frequencies were used and masked thresholds were estimated for between six and eight bands of noise at each.
James C. Saunders +2 more
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2011
Trends were analyzed and the results on the genetic researches of budgerigars have been reviewed. The methods of the genetic analysis of reproductive parameters, adapted to the features of the breeding of this species in captivity, have been described. It was found, that budgerigar can be used as a model for study of the genetic aspects of reproductive
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Trends were analyzed and the results on the genetic researches of budgerigars have been reviewed. The methods of the genetic analysis of reproductive parameters, adapted to the features of the breeding of this species in captivity, have been described. It was found, that budgerigar can be used as a model for study of the genetic aspects of reproductive
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Vasectomy in budgerigars (Melopsittacus undulatus)
Veterinary Record, 1987J H, Samour, J A, Markham
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Melopsittacus undulatus and the chamber of preference
Ergebnisse jüngerer Studien zeigen, dass der Gesang von Wellensittichen (Melopsittacus undulatus), ähnlich wie menschliche Sprache, in bedeutungslose Segmente zerlegt werden kann. Mit diesen Segmenten können durch Kombination Sinnvolle Muster gebildet werden.openaire +1 more source