LAUSR

Abstract Background Ventral abdominal herniation (with or without oviduct involvement) in avian species is most commonly seen in reproductively active females. Case Description A 2.5-year-old female budgerigar (Melopsittacus undulatus) presented for a ventral tail, 2.0 cm in diameter, mass extending between the cloaca and the tail base. Upon surgical evaluation, the mass was determined to be a herniation of the oviduct and later confirmed with histopathology. A salpingohysterectomy and closure of the body wall defect was performed, and the patient recovered well. Post-operative radiography revealed no evidence of retained egg or other obvious pathology to determine an underlying cause. Conclusions and Case Relevance Lateral body wall herniations with involvement of the oviduct has been reported, but an undertail body wall herniation involving the oviduct has not been previously reported based on the literature search, and should be considered in birds presented with similar lesions in this anatomical location.