Abstract: A bird feeder is constructed from a conventional liter size plastic bottle having a bottom shell secured to the curved bottom wall. The shell is removed as by soaking. An adapter has a central ring which threads onto the bottle neck. A plurality of circumferentially distributed legs extend from the ring. The legs are spaced to correspond to the openings in the shell. The legs have ends which project through the openings and are connected to the shell, with the shell spaced from the end of the discharge neck. Inverting of the bottle results in gravity feed of bird seed into the shell. Removable perches are releasably secured to the edge of the ring. The adapter may be formed with seven legs, with three legs spaced for connection to a bottom shell having three openings, or four legs for a shelf having four openings.