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The alimentary system of birds can be harmed by several pathogens, among them yeasts. There are some typical situations in which Candida spp. occur in a birds' crop, stomach or bowel. If the immune system is weak, yeasts often have a walk-over. Such immune system disorders can be caused by several factors such as the moult or stress. Also after a treatment with antibiotics, yeasts can show up. Antibiotics fight bacteria - and they don't tell apart good from bad bacteria. So they also kill the "good" bacteria and disturb the intestinal flora. Once there is an imbalance, yeasts can spread. This kind of disease is called a Candidiasis or a thrush.
Candidiasis symptoms and signs
Typical symptoms are exhaustion, fatigue, loss of appetite, wet droppings (diarrhoea), vomiting, and loss of weight. If a bird throws up its food, in many cases the mucus smells sourly. And in some cases one can see that a birds' crop is swollen. This happens because Candida spp. are gas-forming. The photo on the right shows this phenomenon. As you can see, the crop looks like a "balloon". In an advanced state of the disease, birds can show numbness, disturbance of equilibrium and even palsies. This happens because yeasts produce so-called mycotoxins. These toxic substances attack the inner organs such as the liver and the central nervous system. Please note: Not all the above mentioned symptoms may occur in each individual case! It is necessary to bring your bird to a vet who will examine the feathered patient. By taking a smear from the crop or cloaca the vet can identify the pathogens and find out if you have to deal with yeasts or with other pathogens.
Other diseases caused by yeasts and related pathogens
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