What is the danger of aspergillosis in raptors?

Aspergillosis is a serious fungal infection primarily affecting the respiratory system of raptors. The correct answer highlights that it causes lethal inflammation in the lungs, which can severely impact the bird's ability to breathe and acquire oxygen. This condition is often caused by the inhalation of spores from the Aspergillus fungus, which is commonly found in the environment. When the spores enter the lungs, they can proliferate, leading to chronic inflammation, tissue damage, and ultimately respiratory failure if untreated.

The other options do not accurately reflect the primary danger posed by aspergillosis. While it could indirectly lead to behavioral issues due to discomfort or health decline, the primary and most immediate danger remains the severe respiratory complications. Blindness and reduced flight ability may result from systemic disease or other health issues, but they are not direct outcomes of aspergillosis itself. The critical risk factor to focus on is the inflammation in the lungs, which is what makes the condition particularly dangerous for these birds of prey.