New Locality of the endangered Sierra Madre Sparrow (Xenospiza Baileyi) from the State of Durango, Mexico, and recommendations for its conservation Autores: Martínez-Guerrero, José Hugo, Nocedal, Jorge, Sierra-Franco, Daniel, Arroyo-Arroyo, Samuel Ignacio, Pereda-Solís, Martín Emilio

Waterfowl abundance in relation to landscape complexity in a RAMSAR site of Northern Mexico Autores: Chacón de la Cruz, José Elías, Pompa García, Marín, Treviño Garza, Eduardo Javier, Martínez Guerrero, José Hugo, Aguirre Salado, Carlos Arturo, Pereda Solís, Martín Emilio