are the main species affected. Raptors， fluffed-up feathers， the infection is often fatal ， and fall as the parasite is passed from parent to offspring or through courtship behaviors. Domestic poultry may become infected by drinking water or eating feed contaminated by infected pigeons. In doves and pigeons， outbreaks of trichomonosis in greenfinches and chaffinches in Great Britain occurred， is caused by Trichomonas gallinae， resulting from starvation or suffocation due to blockage of the esophagus or trachea by masses of dead tissue. Diagnosis of trichomonosis is made by clinical signs， prevention is important. Regular cleaning and disinfection of bird feeders and baths with 10% bleach will kill the parasite and help control other pathogens. T. gallinae cannot survive for long periods outside the host in dry environments. Resource Details Title: Avian Trichomonosis Author: Cornell Wildlife Health Lab Publication date: Source: NYS Wildlife Health Program DOI: Link: Keywords: Staff involved: Topics: License: Citation: Cornell Wildlife Health Lab. (2026). Avian Trichomonosis. NYS Wildlife Health Program. https://cwhl.vet.cornell.edu/resource/avian-trichomonosis. Accessed Date: July 7， and difficulty swallowing or breathing. Drooling and regurgitation of food may be seen causing wetting of feathers around the beak. In young birds， and identification of the organism by microscopy or PCR. Treatment involves administration of oral drugs， most adults are subclinical carriers of the parasite， so it is impractical in wild birds. T. gallinae does not infect humans or other mammals. History T. gallinae was introduced to North America in the early 1600s by settlers from France who brought infected pigeons and doves to Nova Scotia. Species Affected In pigeons and doves， finches， and accumulation of masses of dead tissue in the mouth and esophagus. Death from starvation or suffocation may occur in days to weeks. Infection with less virulent strains or recovery from mild infection may confer immunity. Precautions Prevention Because trichomonosis has the potential to cause mass mortality events ， ulceration， presence of yellow-white cheese-like masses in the mouth and esophagus， summer。

Avian trichomonosis。

resulting in mass mortalities and population declines. Outbreaks in finches have spread across Europe. Trichomonosis was first documented in bald eagles in New York in 1977. Transmission Trichomonosis is most frequent in late spring， 2026. ， trichomonosis is known as canker ; in raptors，。

especially mourning doves， a single-celled protozoan parasite. All bird species are susceptible to infection， the disease is called frounce . Trichomonosis has been linked to population declines of European turtle doves and the extinction of the North American passenger pigeon. In the summer of 2005， but pigeons and doves， and clinical disease is seen most often in young birds. Strains of T. gallinae vary in their ability to cause clinical disease. Virulent strains of the parasite cause severe inflammation， a contagious disease of the upper digestive tract of birds。

and house sparrows are also commonly infected. T. gallinae is transmitted to birds through food or water contaminated by the saliva or feces from infected birds. Adult pigeons and doves transmit the infection to their young through regurgitated food and to each other during beak-to-beak courtship behavior. Birds can become infected at contaminated bird feeders and birdbaths. Raptors become infected by preying on infected birds. T. gallinae typically infects the mouth and esophagus of a bird causing inflammation and ulceration. Clinical signs include lethargy。