Bird Conservation Region 45

Planicie Costera y Lomeríos del Pacífico Sur

This BCR runs along the Pacific coast of Mexico from Nayarit south through Chiapas. Vegetation typically includes tropical deciduous and semi-deciduous forests, mangroves, desert scrublands, and riparian vegetation. Species endemic to this part of Mexico include Lilac-crowned Parrot, Bumblebee Hummingbird, Blue Mockingbird, West Mexican Chachalaca, Green-fronted Hummingbird, Golden-crowned Emerald, Golden-cheeked Woodpecker, White-striped Woodcreeper, Flammulated Flycatcher, San Blas Jay, Rufous-backed Robin, Golden Vireo, and Sinaloa and Happy Wrens. The Chamela–Cuitzmala IBA is also a biosphere
reserve and the locale for two biological stations. Additional important species found in the IBA include Black-vented Shearwater, Least Storm-Petrel, Elegant Tern, Peregrine Falcon, Yellowheaded Parrot, Military Macaw, Banded Quail, Mexican Parrotlet, Balsas Screech-Owl, Violet-crowned Hummingbird, Goldencheeked Woodpecker, Black-capped Gnatcatcher, Blue Mockingbird, Red-headed Tanager, Orange-breasted Bunting, Black-chested Sparrow, Audubon’s Oriole, and Yellow-winged Cacique. The coastal portion of the Coacolmán–Pómaro IBA is covered by tropical deciduous and semi-deciduous forests. Species associated with the well-preserved altitudinal gradient include Reddish Egret, Wood Stork, Common Black-Hawk, Sharp-shinned Hawk, Great Black-Hawk, Peregrine Falcon, and Mottled Owl. Two small islands (Isla Redonda and Isla Larga), which lie just a few kilometers off the Nayarit–Jalisco coast, form the Islas Marietas IBA. Cliffs, caves, and sandy beaches ring the islands, with interior vegetation dominated by grasslands and columnar cacti. Large numbers of breeding birds congregate here, including more than half of Mexico’s Bridled Tern, as well as Brown Boobies and Brown Noddies. Laguna de Manialtepec is a coastal Oaxaca IBA covered with aquatic and subaquatic vegetation, tropical deciduous forest, thorn forest, mangroves, coastal dunes, and palm plantations. Important species include Townsend’s Shearwater, Red-footed Booby, Least Bittern, Reddish Egret, Wood Stork, Muscovy Duck, Northern Pintail, Blue-winged Teal, Masked Duck, Yellow-headed Vulture, Crane Hawk, Elegant and Least Terns, and Cinnamon-tailed Sparrow.

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