2021

Signalment:Juvenile male Black backed gull

History:Severe vestibular symptoms were noted that did not improve or resolve with supportive care.

Gross Lesions:The cloaca is focally expanded by an approximately 1.5 cm in diameter, thick-walled spherical out-pocketing continuous with the cloacal lumen, containing dozens of 0.5 cm-long metazoan parasites tightly adhered to the mucosa. Sharp delineation between a plump, faintly bilobed, pale pink spherical forebody and oblong pearl white hindbody is appreciable.