The occurrence of subcutaneous lipomas is frequently reported in psittacine birds. A number of species seem to be particularly predisposed to developing these benign rumors, including Amazon parrots (Amazona species), rose-breasted cockatoos (Eolophusroseicapillus), and the budgerigar (Melopsittacus undulatus). Development of lipomas in psittacine birds has been associated with dietary induced obesity, hypothyroidism, and genetic factors. The association with obesity appears to be strong, as anecdotally lipomas occur more frequently in over-conditioned birds. Different therapeutic interventions have been attempted with varying degrees of success. These include surgical removal, dietary modification, and oral administration of thyroxine. None of these approaches have been scientifically evaluated.
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