Gnatcatcher, Blue-gray Polioptila caerulea 192, 268.    From Wordnik.com.  [The Field Guide to Wildlife Habitats of the Eastern United States] Reference

Blue-gray Gnatcatcher (Polioptila caerulea) - the gray colour, long tail and pattern of white on the outer retrices suggest a gnatcatcher.    From Wordnik.com.  [ScienceBlogs Channel : Life Science] Reference

Among the bird species found here are the sanguaro-inhabiting cactus wren (Calypte costae), black-tailed gnatcatcher (Polioptila melanura), phainopepla (Phainopepla nitens), Gila woodpecker (Melanerpes uropygualis), and Costa's hummingbird (Calypte costae).    From Wordnik.com.  [Sonoran desert] Reference

A large number of specialist and endemic species of plants and animals are found here, including the Quino checkerspot butterfly (Euphydryas editha quino), Hermes copper butterfly (Lycaena hermes), San Diego thorn mint (Acanthomintha ilicifolia), San Diego ambrosia (Ambrosia pumila), San Diego barrel cactus (Ferocactus viridescens), San Diego pocket mouse (Perognathus fallax), Merriam kangaroo rat (Dipodomys merriami), Stephens kangaroo rat (Dipodomys stephensi), red-diamond rattlesnake (Crotalus ruber), San Diego banded gecko (Coleonyx variegatus abbotti), San Diego horned lizard (Phrynosoma coronatum blainvillei), California gnatcatcher (Polioptila californica), and the coastal populations of the cactus wren (Campylorhyncus brunneicapillus).    From Wordnik.com.  [California coastal sage and chaparral] Reference