The single most important consideration for a Quaker Parrot cage is bar spacing: no wider than 5/8 inch to prevent escape or head entrapment, as these clever birds can squeeze through surprisingly small gaps. Our editorial team researched cages that balance Quaker Parrots’ need for vertical climbing space with sturdy construction to withstand their strong beaks, and found that a minimum size of 24x24x36 inches is ideal for a single bird.