Elaboration:

• Bird Fancier’s Lung:

  This is a type of hypersensitivity pneumonitis caused by inhaling allergens from bird droppings, particularly pigeon droppings. Symptoms can range from mild to severe, and chronic exposure can lead to lung scarring (fibrosis) and respiratory failure. 

• Psittacosis:

  This infection is spread through bird droppings, feathers, or respiratory secretions. It can cause flu-like symptoms like fever, chills, and headache, as well as a cough, which can be initially dry but may later produce green or yellowish sputum. 

• Allergies:

  Exposure to pigeon feathers and droppings can trigger allergic reactions in some individuals, affecting the respiratory system, skin, and eyes. 

• Other Respiratory Issues:

  Pigeon exposure can also contribute to other respiratory problems, such as difficulty breathing, wheezing, and nasal discharge, especially in birds. 

• Symptoms in Pigeons:

  Respiratory infections in pigeons can be characterized by watery eyes, sneezing, wheezing, coughing, and nasal discharge. In severe cases, they may exhibit ruffled feathers, difficulty perching, and closed eyes.