| http://www.w3.org/ns/prov#value | - Infections with gram-negative bacteria are one of the most common causes and often secondary to stress, another illness, or fecal contamination of food or water, and are one of the major causes in smaller birds; abscesses may form in some cases; Candida is also often secondary to another illness or stress; Trichomonas is a common cause, especially in budgies; pox virus and tapeworms are more commo
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