The Sierra Madre Sparrow (Xenospiza baileyi) is an endemic species of Mexico that is threatened with extinction. Its distribution is reported in two areas: One in the Transvolcanic Belt of central Mexico (La Cima) near Mexico City and the other in the Sierra Madre Occidental in northwestern Mexico (Ejido Ojo de Agua El Cazador) near the city of Durango, in the state of Durango. The habitat is the same in these two areas, and consists of sub-alpine grassland that is located in shallow valleys or shallows. In our case, "El Bajío la Cantera" of approximately 55 hectares, is mostly used in rainfed agriculture, protected from livestock grazing with wire fences, which in turn represents protection for remnants of grassland where they are the birds. "El Bajío la Cantera" belongs to Ejido 12 de Mayo, Municipality of San Dimas, Durango, where 28 males were detected singing along a 500 meter transect. This finding represents the population of the healthiest Sierra Madre Sparrow currently known, so it would be necessary to document their population trend over time. This information can help to evaluate and propose the creation of a special protection area for the species that involves joint government actions and ejidatarios tending to conserve the habitat during the reproductive season in order to increase and / or maintain the size of the population.
El gorrión chapulín (Ammodramus savannarum) se distribuye ampliamente en las llanuras de América del Norte durante la temporada de reproducción, con poblaciones de cuatro subespecies clasificadas como residentes, migratorias y parcialmente migratorias. En México y América Central, la distribución del taxón especie es poco conocida, especialmente en lo que respecta a las poblaciones reproductoras. Sólo hay un registro de reproducción para las praderas del norte de México en el estado de Zacatecas desde mediados de la década de los cincuenta. Durante la temporada de reproducción de verano de 2017 registramos, con la ayuda de la atracción de vocalizaciones, seis individuos de gorrión chapulín en una pradera del norte de Durango, dos de los cuales respondieron activamente al llamado, las aves realizaron comportamiento territorial además del hallazgo de un nido activo con cuatro polluelos. Este es el primer registro reproductivo de verano para el estado de Durango en Cuchillas de la Zarca, 80 km al sur de la ciudad de Parral, Chihuahua, un área prioritaria de conservación de pastizales de América del Norte.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.