👉 Macrovalvular valves, a type of valve found in birds, are specialized for controlling water flow and are characterized by having a single valve that controls which side of the valve is open. They can be divided into two main types: macrovalvular and microvalvular valves. Macrovalvular valves are more efficient at controlling flow than microvalvular valves due to their larger size, but they are less common in birds.
