What is a common symptom of a hawk suffering from pneumonia?

Heavy breathing is a common symptom of a hawk suffering from pneumonia because this condition affects the respiratory system. Pneumonia can cause inflammation and fluid accumulation in the lungs, leading to difficulty in breathing. As the hawk struggles to get enough oxygen, you will often notice increased respiratory effort, which manifests as heavy or labored breathing.

The other options describe symptoms that are associated with different health issues in birds. For instance, cheesy growth in the mouth may indicate a fungal infection or other oral health issues, bright green mutes could suggest issues with the bird’s diet or potential liver problems, and flecks of red in mutes may point to internal bleeding or other gastrointestinal conditions. Each of these symptoms reflects different health concerns rather than respiratory distress.