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P. 5

SECTION                                     I









                    The Birds














                         Chapter 1










                                      Avian Radiography and

                                      Radiographic Diagnosis













                    III SMALL CAGE BIRDS: LIMITED                        latter situation, obtaining more than a dorsoventral
                         IMAGING OPTIONS                                 view is difficult. The principal drawback associated

                                                                         with these methods is that the wings and legs will be
                    Our practice focus is on wild birds, and consequently   superimposed on the trunk, concealing portions of the
                    we radiograph comparatively few small cage birds     viscera.
                    such as parakeets, canaries, and the like. Many of these
                    small birds have occult disease, with radiography
                    serving as a screening procedure. Older birds with
                    localized swellings are often believed to have tumors   III MEDIUM-SIZED CAGE BIRDS
                    and are radiographed in the hope of obtaining more
                    information such as whether there is bone involve-   Small-sized parrots, mostly Amazons and African
                    ment. Because many of these birds are quite fragile   Grays, are the most common medium-sized cage birds
                    medically, as well as physically, they are often exam-  seen in our practice. Like the majority of wild birds we
                    ined with little or no restraint, with full realization of   image, parrots are imaged by radiographs and occa-
                    the effect that this will have on radiographic quality.  sionally ultrasound while anesthetized with gas
                       We prefer to image small unrestrained birds in the   (Figure 1-3), which also provides an additional oppor-
                    perching position (Figure 1-1), provided they are strong   tunity to further examine any known or suspected
                    enough. If a bird is too weak to perch, it can be radio-  injuries. In special circumstances, we may radiograph
                    graphed in a disposable cardboard box (Figure 1-2),   these birds while perched (Figure 1-4).
                    with its movement limited by adjustable inserts. In this                              Text continued on p. 6.

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