Thrush is a common acute or chronic fungus infection especially of the digestive tract. Other names for this disease are mycosis, muguet, sour crop.
Etiology
- Candida albicans, a yeast-like organism.
- Bird’s eating food that is wet, moldy, sour or contaminated. Dirty drinking water is another source of trouble.

Pseudomembrane on esophagus, pharynx, and larynx (red arrow)
Symptoms
Poor growth of young pigeons, accumulation in the crop; whitish fungal growths in the throat.
Recognition
Microscopic examination of the fungal growths in the throat.
Treatment: Separation of affected birds. Administration of antifungal e.g. Nystatin and high levels of Vitamin A.
Prevention: Improving the environment.