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The red-breasted nuthatch (Sitta canadensis) is widely distributed in the United States and Canada. Based on its irruptions, it has been recorded in the States of Chihuahua, Sonora, Sinaloa, Baja California, Nuevo León and western part of Mexico (Jalisco and Colima). In Baja California, there are four areas of record: (1) Isla Guadalupe (population considered eradicated since 1995) (2), Sierra de San Pedro Mártir (3), Sierra Juárez, and (4) Santa Rosaliíta, the latter two taken more than 20 years ago. We identified an adult male red-breasted nuthatch for the first time within the Los Attenuatas Forest during winter 2015. [ABSTRACT FROM AUTHOR]

El artículo discurre sobre el desplazamiento y la migración en la región de las Islas del Pacífico. La autora comenta sobre el impacto de los cambios climáticos y los desastres naturales en el desplazamiento, y describe el posible futuro de estas islas como consecuencia de estos desastres.

This article makes a follow-up about the water in the Canary Islands and its progressive privatization through a document relation and its historiographic processinos. The dynamics of study consisted basically of the allusive bibliography and registry sources less used to form, inquiry analysis following a chronological progression, an approach to the State of the art. Shows the location of different sources, while evidence inter [ABSTRACT FROM AUTHOR]