A "one-eye cold" in pigeons is a condition characterized by inflammation and infection in the sinuses and conjunctiva of one eye. This condition can result in various symptoms and is often caused by microorganisms like Chlamydia, Mycoplasma, or bacteria. Here's a breakdown of the key components of a one-eye cold:
Sinus Inflammation: Pigeons have several sinuses in their head, and when one of these sinuses becomes inflamed, it produces fluid. This fluid is normally drained away through narrow tubes. However, in some cases, fluid can accumulate faster than it can drain, particularly in a doughnut-shaped sinus that surrounds the eye. This accumulation of fluid causes a noticeable bulge to develop below the affected eye.
Visible Bulge: Unlike mammals, where the outer sinus wall is made of bone, in birds, it is composed of soft tissue. This difference in structure makes the bulge caused by accumulated fluid visible. Gravity plays a role in causing the fluid to accumulate at the base of this sinus.
Conjunctivitis: In addition to sinus inflammation, the lining of the eyelids, known as the conjunctiva, can also become inflamed, leading to conjunctivitis. Conjunctivitis is characterized by eye redness and irritation.
Excessive Tears: The irritation associated with conjunctivitis can lead to the production of excessive tears. These tears may overflow the eyelid margin and then dry out, sticking to the feathers around the eye.
Frothy Tears: The tears produced during a one-eye cold may contain high-protein inflammatory discharges. The blinking action of the eyelids can cause these discharges to turn into froth or small bubbles within the tears.
Drainage: The discharge from the sinus flows through ducts under the cere (the fleshy area at the base of the beak), staining it. From there, it can flow through a "slot" in the roof of the mouth or into the throat.
A one-eye cold is often considered a sign of infection or illness in pigeons, and fanciers (pigeon enthusiasts or keepers) pay close attention to such symptoms as they can indicate the presence of microorganisms like Chlamydia or Mycoplasma. Proper diagnosis and treatment are essential to manage and treat a one-eye cold in pigeons to prevent it from worsening and affecting the bird's overall health.Contact RP Diagnostic Labs Pigeon
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