Pigeon shelter is a term used to describe a structure that provides a safe and comfortable environment for pigeons. The two most common types of pigeon shelters are cotes and coops. A COTE is a small, enclosed structure with a roof and walls made of wood or other materials. A COOP is a larger, open-air structure with a roof and walls made of wire mesh or other materials. Both provide protection from the elements and predators, as well as a place for pigeons to roost and nest.