Population Status of American Oystercatchers (Haematopus palliatus frazari) Breeding in Northwest Mexico
EDUARDO PALACIOS CASTRO
JOSE ALFREDO CASTILLO GUERRERO
DANIEL GALINDO ESPINOSA
EDGAR SANTIAGO AMADOR SILVA
GUILLERMO JUAN FERNANDEZ ACEVES
JONATHAN NATAEL VARGAS VEGA
XICOTENCATL VEGA PICOS
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"The western race of the American Oystercatcher (Haematopus palliatus frazari) is a resident and endangered shorebird of western Mexico. Its breeding population and conservation concerns are poorly known, but recent information indicates extremely low numbers and a discrete breeding distribution. Because of loss and degradation of sandy beaches by coastal development and disturbance from human recreational activities, the American Oystercatcher is a priority species in the Shorebird Conservation Plans of the United States and Mexico. Research on its distribution and abundance during the 2009 breeding season resulted in the identification of 2,286 adults in northwest Mexico. Although the population is higher than previous estimates, its distribution is more restricted than expected. It is distributed almost exclusively in northwest Mexico, and 80% of the total breeding population is found on the islands of Sinaloa and Baja California Sur. Based on these results, this species was officially federally listed on the Mexican List of Protected Species in 2010. This legal mechanism will promote the management and protection of this priority subspecies as well as other waterbirds occupying the same habitats."
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