TOPOGRAFIA E MORFOLOGIA DAS VÍSCERAS DO PERIQUITO-AUSTRALIANO (Melopsittacus undulatus, SHAW 1805) [PDF]
Ciência Animal Brasileira, 2009 Em virtude da escassez de dados referentes à morfologia e topografia das aves em geral, o presente estudo teve como objetivo descrever a topografia e morfologia das vísceras do periquito-australiano (Melopsittacus undulatus), para assim proporcionar um ...
Fabiana S. Matsumoto +5 more
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Metastatic Leiomyosarcoma Involving Bone and Kidney in an Adult Budgerigar (Melopsittacus undulatus) [PDF]
Veterinary Medicine and Science, Volume 12, Issue 5, September 2026.A 2‐year‐old male budgerigar presents with swelling of the medial left leg. Soft tissue neoplasia is suspected after empirical treatment fails. Histopathology and immunohistochemistry (α‐SMA and desmin positivity, vimentin negativity) confirm leiomyosarcoma, with metastasis to bone and kidneys. This case documents uncommon metastatic spread in an avian
Hemad Shafiei +4 more
wiley +2 more sources
Additional records of Neopsittaconirmus lice (Insecta: Phthiraptera: Ischnocera) parasitizing captive parrots [PDF]
Revista Brasileira de Parasitologia VeterináriaSpecies of the chewing louse genus Neopsittaconirmus Conci, 1942 are host-specific parasites on Old World and Australasian parrots (Psittaciformes), infesting both wild and captive birds. Despite veterinarian practices that attempt to eliminate parasites
Yoshika Oniki-Willis +2 more
doaj +2 more sources
Variation in parrot jaw musculature [PDF]
The Anatomical Record, Volume 309, Issue 9, Page 2519-2533, September 2026.Interspecific morphological differences in some superficial jaw muscles of parrots. Abstract Psittaciformes, the order encompassing parrots and their relatives, are highly diverse and generally known for having a strong beaks used for multiple behaviors. The muscles related to the masticatory apparatus should reflect this functional complexity; however,
Ana Carolina L. Faillace +3 more
wiley +2 more sources
Evaluation of Intraosseous Excretory Urography Using Iodixanol for Renal Imaging in Budgerigars (Melopsittacus undulatus) [PDF]
Veterinary Medicine and Science, Volume 12, Issue 1, January 2026.This study demonstrates that intraosseous injection of iodixanol into the proximal tibiotarsal bone provides a reliable, safe, and practical method for diagnostic excretory urography in budgerigars. The technique offers clear visualisation of renal structures and can be an alternative when intravenous access is limited in avian patients.
Hamideh Zeinali +3 more
wiley +2 more sources
Polyomavirus Infection in Two Young Parrots: Assessment of Viral Distribution in Organs and Affected Tissues [PDF]
Veterinary Medicine International, Volume 2026, Issue 1, 2026.Avian polyomavirus (APyV) is responsible for diseases in birds belonging to several avian orders, including Psittaciformes, Anseriformes, and other susceptible taxa. APyVs appear to be able to replicate in various organs of susceptible bird species.
Gaia Casalino +14 more
wiley +2 more sources
The Effects of Human Presence, Restraint, and Stressed Neighbors on Corticosterone Levels in Domesticated Budgerigars (Melopsittacus undulatus) [PDF]
Zoo Biology, Volume 45, Issue 1, Page 37-45, January/February 2026.Female budgerigars (Melopsittacus undulatus) did not significantly elevate their plasma corticosterone levels in response to human presence at the beginning of the experiment. However, plasma corticosterone was significantly elevated by restraint stress, the return of a neighbor that received restraint stress, and human presence at the end of the ...
Dustin G. Reichard, Kelly V. Summers
wiley +2 more sources
Novel Approach to Inter‐Onset‐Interval Ratio Uncovers Music‐Like Rhythmic Patterns in Budgerigar (Melopsittacus undulatus) Warble Song [PDF]
Annals of the New York Academy of Sciences, Volume 1557, Issue 1, March 2026.Recent work on non‐human animal vocalizations has offered new insights into rhythmicity. In an attempt to improve upon methods commonly used in animal rhythm research, we investigated the rhythmic structure of budgerigar song. Our proposed statistical approach showed rhythmicity in human music but not language, and uncovered non‐random structured ...
Jeroen van der Aa +3 more
wiley +2 more sources
Anais da Academia Brasileira de Ciências, 2004 In the Budgerigar Melopsittacus undulatus, the significance of a conspecific alarm call was investigated in two seasons, winter and spring. Two qualitatively different behavioral responses were displayed by the receivers in reply to playbacks: call(s ...
Gérard Nicolas +2 more
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Contrafreeloading and its influencing factors in budgerigars (Melopsittacus undulatus): Implications for their feeding and welfare [PDF]
Animal WelfareContrafreeloading (CFL) refers to animals’ tendency to prefer obtaining food through effort rather than accessing food that is freely available. Researchers have proposed various hypotheses to explain this intriguing phenomenon, but few studies have ...
Yue Tao +4 more
doaj +2 more sources