Do Pigeons and Doves Columbidae have a gall bladder?

Yes, pigeons and doves (Columbidae) do have a gall bladder. The gall bladder is a small organ that stores bile, which is a fluid produced by the liver to aid in digestion. In birds, the gall bladder is located near the liver, and it connects to the small intestine through a duct. When the bird eats a fatty meal, the gall bladder releases bile into the small intestine to help break down the fats. The gall bladder also helps to regulate the flow of bile into the intestine, preventing the bile from becoming too concentrated and damaging the intestinal lining.