The Sevilleta National Wildlife Refuge has some areas set aside for scientific research, and permits to conduct research are available. The refuge currently hosts the Sevilleta Long Term Ecological Research (LTER) Program, conducted by the University of New Mexico. This program has produced a number of studies documenting and characterizing the ecology and microbiota of the refuge. Most, but not all, of the refuge is off limits to the public and its development is left to nature. Use such as hiking and photography are permitted in some areas. There are over seven miles of trails open sunrise to sunset. Picnicking and camping are not permitted anywhere in the refuge. The refuge is the one of the fragile breeding habitats for the endangered Willow Flycatcher found here from May to September. The refuge also has fostered mexican wolves for the last seven years.