This article contains a list of birds found in the Sierra de Manantlán Biosphere Reserve, which straddles the states of Colima and Jalisco in Mexico. The reserve is located in the transition of the Nearctic and Neotropical realms and encompasses parts of the Sierra Madre del Sur, with a wide range of altitudes, climates and soils. The effects of tectonic and volcanic activities and erosion are notable within the reserve. Ecological characteristics