In the wild, parrots typically do not build their own nests- instead they find empty cavities in logs or trees to nest in. Because they seek out small, dark spaces for security, many owners like to offer tents for their birds. Tents are quite popular with parrotlets, lovebirds, lineolated parrots, conures, and some larger parrots. They come in different shapes, sizes, and materials; some are long, tube-like, and open at both ends, while others are triangular, or only have 1 opening.
Many larger parrots will think a tent is a toy and tear them up quickly instead of using them! But, even the little birds will chew holes in their tents so it is important to check them frequently for holes and loose threads, both of which can be hazardous.