Two airports serve this region, and both must be included in a comprehensive visit - Mexico City, and Acapulco. An open jaw flights will arrive in of the two cities and depart from the other one, with the birding along a one-way route:
Endemic MUST-SEE BIRDS of this region include: BANDED QUAIL, BALSAS SCREECH-OWL, WHITE-FRONTED [SUMMER] & WHITE-NAPED SWIFTS, SHORT-CRESTED COQUETTE, WHITE-TAILED HUMMINGBIRD, STRICKLAND'S WOODPECKER, WHITE-THROATED JAY, BLACKPOLLED & HOODED YELLOWTHROATS, SLATE-BLUE SEEDEATER, GREENIPED BRUSH-FINCH, COLLARED & OLIVE-BACKED TOWHEES, BLACK-CHESTED, STRIPED, & SIERRA MADRE SPARROWS, & BLACK-BACKED ORIOLE.
Endemic SHARED-REGION BIRDS also regularly found on this route include: WEST MEXICAN CHACHALACA, LONG-TAILED WOOD-PARTRIDGE, LILAC-CROWNED PARROT, COLIMA PYGMY-OWL, EARED POORWILL, MEXICAN HERMIT, GOLDEN-CROWNED EMERALD, BUMBLEBEE, DUSKY, GREEN-FRONTED & DOUBLEDAY'S HUMMINGBIRDS, GOLDEN-CHEEKED, GRAY-BREASTED & GRAY-CROWNED WOODPECKERS, WAGLER'S TOUCANET, CITEROLINE TROGON, GOLDEN VIREO, PILEATED & FLAMMULATED FLYCATCHERS, WHITEIPED WOODCREEPER, SAN BLAS JAY, GRAY-BARRED, BOUCARD'S, SINALOA & HAPPY WRENS, RUSSET NIGHTINGALE-THRUSH, RUFOUS-BACKED ROBIN, AZTEC THURSH, BLUE MOCKINGBIRD, RED WARBLER, RED-BREASTED CHAT, RED-HEADED TANAGER, GODMAN'S EUPHONIA, CINNAMON-RUMPED SEEDEATER, RUFOUS-CAPPED BRUSH-FINCH, ORANGE-BREASTED BUNTING, RUSTY-CROWNED GROUND-SPARROW, AUDUBON'S [DICKEY'S] ORIOLE & YELLOW-WINGED CACIQUE.
Other non-endemic birds of high interest better seen in this region include: Thicket Tinamou, Singing Quail, White-faced Quail-Dove, Pheasant Cuckoo, Lesser Ground-Cuckoo, Stygian Owl, Great Swallow-tailed Swift, Garnet-throated Hummingbird, Ruddy Foliage-gleaner, Gray-collared Becard, Chestnut-sided Shrike-Vireo, Unicolored Jay, Banded Wren, White-lored Gnatcatcher, Crescent-chested & Fan-tailed Warblers, and both Yellow and Hooded Grosbeaks. In addition the route includes the endemic race of both Red-winged Blackbird (gubernator) and of Audubon's Oriole (Dickeyae).
The strategy for birding this region is simple - begin in one of the airport cities and travel toward the other one. Between nine and twelve days based out of Mexico City, Taxco, Chilpancingo, and Atoyac de Alvarez are required to cover the many habitat-pockets where the 400 or so species occur within this 200-mile linear drive. Of importance, between February and June the Short-crested Coquette is at a low enough elevation in the Sierra de Atoyac where vehicles can reach it, and after the spring rains the harder birds begin to call - therefore the best window to visit for this bird is between April and June.