Newcastle disease is a viral disease of birds caused by avian paramyxovirus 1 (APMV-1). For official control purposes, this disease is currently defined as the most severe form of the illness, which is caused only by certain viral strains. Many less virulent strains of APMV-1 also circulate among domesticated and wild birds. These viruses usually cause much milder clinical signs or infect birds...

Newcastle disease is a viral disease of birds caused by avian paramyxovirus 1 (APMV-1). For official control purposes, this disease is currently defined as the most severe form of the illness, which is caused only by certain viral strains. Many less virulent strains of APMV-1 also circulate among domesticated and wild birds. These viruses usually cause much milder clinical signs or infect birds...

1. Wyss S, Deb A, Watson R, Hammer S. Radiographic measurements for PDD diagnosis in Spix’s macaws (Cyanopsitta spixii) at Al Wabra Wildlife Preservation (AWWP), Qatar. In: Proceedings of the International Conference on Diseases of Zoo and Wild Animals. Zurich: University of Zurich; 2009. p. 349–54. 2. Lierz M, Herden C, Herzog S, Piepenbring A. Proventricular dilatation disease and avian borna...

Psittacine beak and feather disease virus (PBFDV) and avian polyomavirus (APV) are the most common viral diseases in psittacine birds, both affecting feathers and physical appearance of birds. Between 2005 and 2009, a total of 269 samples were collected from birds presented at veterinary clinics, shelters and rescue centers of wildlife in Costa Rica. They belonged to 19 species of psittacine bi...

Nest site selection by birds is a critically important life history trait as competition for suitable sites can be intense, and because birds are at their most vulnerable to predators during nesting. Previous studies show that the clutch size and nestling period evolve in response to competition for nest sites and nest predation, respectively. This provides the opportunity to study the relative...

Pathologic feather picking in companion avian species has been attributed to multiple underlying disorders, and many of these birds are thought to be pruritic. Allergies have been discussed as possible contributors to this common and devastating dermatologic disease. This article reviews published information and research currently being conducted on hypersensitivity disorders in avian species....

To study the course of natural avian bornavirus (ABV) infection, 63 psittacines of three bird collections where ABV had been demonstrated were investigated over a period of 1 yr. The psittacines were clinically observed and swabs of crop and cloaca as well as serum samples were collected three separate times at intervals of 2-6 mo. According to the results of detection of ABV RNA by reverse tra...