For Cockatiels / Small Parrots. Select Signature series 3151 bird cages (18x18x57 in.) feature rounded corner seed guards, pull-out bottom grilles and trays and include a playtop so birds have even more room to play and exercise. Select series cages feature rounded corner seed guards, pull-out bottom grilles and trays and include a play top. Birds have even more room to play and exercise. Four stainless steel feed cups and two solid wood perches are also included.. Metal Wire, Wood Perches, Rubber Casters, Plastic Caster Inserts: Size: 18X18X57 INCH: Color: SAGE GREEN