Bird Species and Their Respective Syndromes (Lists diseases specific bird species are most susceptible to)
Causes for Circling, Head Twisting, Unnatural Head Positioning in Birds
PDD - Affects most parrot species, including macaws, African Greys, cockatoos, cockatiels, conures, Eclectus parrots, Amazons and budgies. Common / possible symptoms: Constant or intermittent regurgitation, chronic bacterial or fungal crop infections, pendulous crops, weight loss, passage of whole intact seeds in droppings, incoordination, depression or sudden death. Concomitant central nervous system signs may include ataxia, abnormal head movements, seizures, and proprioceptive or motor deficits.
Newcastle Disease: Respiratory distress, and rasping followed in 1 or 2 days by a paralysis of legs and wings and bad down between legs or straight back over shoulders, twisting of neck (stargazing). In adult birds, loss of production along with some respiratory distress and paralysis after 4 to 6 days.
Polyoma / Avian Polyoma: Causes high levels of mortality in young psittacine birds. Prevalent in macaws, conures, Eclectus parrots, lovebirds, cockatiels, budgies, finches and gallinaceous birds, including chickens and turkeys. Larger psittacines / parrots may die suddenly without signs of illness, or die after showing depression, anorexia, weight loss, delayed crop emptying, regurgitating, diarrhea, dehydration, subcutaneous hemorrhages, ataxia and paralysis.
Psittacosis: Common symptoms: Tremors and / or convulsive movements. Unusual head positions; Opisthotonos (neurologic disease in which the top of the head is bent over and approaches the back. Partial or complete paralysis of the legs
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