[header] How to set up a parrotlet cage [title] Give your bird room to stretch its wings. [step] Parrotlets will like some space, so a cage that's about 18 inches (46 cm) on each side and 20 inches (51 cm) high will work perfectly fine. You can choose a larger cage if you like, but there's no need for it to be huge. 
[title] Choose a cage with narrow bar spacing. [step] Parrotlets can get caught between the bars of cages if they're not properly spaced.