What cushion is the best for pigeon nests

The pigeon nest is the best in the grass cushion, the grass nest is relatively soft, it is more suitable for the pigeons, and the eggs can be safer.Usually pigeons will make nests by themselves, as long as they provide some materials for making nests, they are also acceptable to the nests of artificial nests.If you raise it artificially, you can prepare a special nest box so that the pigeons will hatch in it, and the pigeons will be hatched after a period of time.