Squirrel Defeater Nyjer Feeder. Feed songbirds not squirrels, starlings or grackles. 3 individually weight controlled seed ports equals uninterrupted feeding at other ports. Weight controlled seed ports close under a squirrel's body weight. Spring loaded perches no batteries to replace or recharge. Strong, carbon steel tension springs. Humane squirrel control. No shocking or harm to squirrels. Squirrel baffles large lid and secondary baffle prevent Squirrels from climbing down the feeder to access the seed ports. Secondary baffle above ports protects seed from rainfall. Gnaw proof 304 grade stainless steel port guards, hanger and screws. Long lasting UV protected polycarbonate seed tube. UV protected polypropylene base and baffle lid. Lid has secure fit, but slides up hanger for easy filling. Easy cleaning quick 3 tab disassembly. Large capacity holds 1.3 quarts of seed.