| avian trichomonosis in spotted owls (strix occidentalis): indication of opportunistic spillover from prey. | avian trichomonosis, caused by the flagellated protozoan parasite trichomonas gallinae, has variable pathogenicity among bird species ranging from asymptomatic infections to severe disease periodically manifesting in epidemic mortality. traditionally, columbids are identified as highly susceptible to infection with occasional spillover into raptors that prey on infected birds. we identified avian trichomonosis in two dead california spotted owls (strix occidentalis occidentalis) and three dead n ... | 2016 | 27833856 |