What can cause sour crop in birds?

Sour crop is a condition in birds characterized by the abnormal fermentation of food in the crop, leading to a sour smell and potentially serious health issues. The primary cause of sour crop is often overfeeding and dehydration.

When birds are overfed, especially with food that is high in carbohydrates, their bodies can struggle to process the excess, leading to a buildup of undigested food in the crop. This can create an environment conducive to bacterial growth, resulting in fermentation and the subsequent sour smell. Dehydration exacerbates the situation, as it impairs the bird's ability to digest food and expel waste properly. Together, these factors can lead to the development of sour crop, making it essential for bird owners to monitor feeding amounts and ensure adequate hydration.

Other factors like lack of sunlight, excessive exercise, or low temperatures do not directly relate to the etiology of sour crop in birds. While general health can be affected by these elements, they are not commonly identified as primary contributors to this specific condition.