Diagnosis of egg-related coelomitis is based on typical clinical signs and radiographic images. Endoscopy is possible but may be hampered or risky owing to coelomic fluid and limited air sac space. Radiographically, a large variety of findings can be observed such as the ground-glass appearance of coelomic fluid, multiple or single-shelled or shell-less eggs inside or outside the oviduct, herniation of the abdominal musculature or an expanded coelomic wall, thickened air sacs, and masses in the caudal thoracic and abdominal air sac area. Lateral and ventrodorsal radiographic images taken with the patient under general anesthesia are recommended (Fig. 3). If the goal of radiographic imaging is simply to determine if an egg (or eggs) is present or not, then having the bird remain in a standing position for the procedure is adequate (FIGURE 4 and FIGURE 5). A lateral beam across the