Perky-Pet Blue Antique Mason Jar Wild Bird Waterer. This 32 oz. waterer features an all-metal base and feeding ports for durability, and a circular perch that invites birds to sit and dine. The glass water container with embossed bird detail adds a rustic touch to your garden. Easy to fill and clean, simply unscrew the bottle from the base, fill with water, and screw the base back into place. Attracts a larger variety of birds to your yard.