Open-mouth breathing or panting in a bird is always worth paying attention to because birds do not sweat and have limited ways to regulate body temperature. The most common cause is overheating. Birds pant to dissipate heat by evaporating moisture from their respiratory tract, much like a dog. If the room temperature exceeds 85 degrees Fahrenheit or the cage is in direct sunlight, move your bird to a cooler area immediately and offer fresh water.

Stress and fear can also trigger panting. A new environment, loud noises, the presence of a predator animal, or handling by an unfamiliar person can cause rapid breathing. If the panting stops once the stressor is removed, it was likely situational anxiety.

However, persistent panting, especially when the bird is at rest in a comfortable temperature, is a red flag for respiratory disease. Birds have a highly efficient but delicate respiratory system, and infections from bacteria, fungi like Aspergillus, or viruses can quickly become life-threatening. Other respiratory symptoms to watch for include tail bobbing with each breath, nasal discharge, clicking or wheezing sounds, and a change in voice quality.

Heavy metal poisoning from zinc or lead found in cage hardware, old paint, or household items can also cause labored breathing alongside other symptoms like weakness, green droppings, and seizures.

Exercise-related panting after flying or vigorous play is normal and should resolve within a few minutes. If it does not, the bird may be out of condition or have an underlying heart or respiratory issue.

Any bird that pants at rest, shows tail bobbing, or has audible breathing sounds needs an emergency avian veterinary visit. Respiratory conditions in birds deteriorate rapidly, and by the time symptoms are obvious, the disease is often advanced.