DEEP BASE DESIGN - This 2-gallon deep base waterer is best for adult birds. EASY TO FILL - The handy design allows the base to remain on the jug while filling from the bottom. PREVENTS LEAKS - The chicken waterer includes a plastic stopper with o-ring to prevent leaks. SIMPLE TRANSPORT - The water container comes with a strong carrying handle for easy movement. PERFECT FOR ADULT BIRDS - The water tank holds up to 2 gallon (8 liters) of water.