Bird allergies are immune system reactions in humans to the feather dander (known as feather dust) and fecal matter of birds. In most cases, symptoms are related to allergic rhinitis (hay fever). But occasionally, they can be more severe, significantly reducing lung capacity and causing breathing difficulties, coughing and weight loss.

Those at risk for bird allergies include pet owners and individuals who work with birds on a regular basis, such as zookeepers, bird fanciers and farm workers. Although bird allergies can produce serious symptoms, the percentage of the population that is allergic to birds is significantly lower than the numbers of people allergic to cats or dogs.

Physicians can treat the symptoms of bird allergies by prescribing corticosteroids and other drugs that reduce inflammation in the airways. However, the most effective treatment for bird allergies is to limit or eliminate regular exposure to birds and the allergens they create.