Taxonomy. Phylum: Chordata: Class: Aves: Order: Passeriformes: Superfamily: Certhioidea: Family: Troglodytidae Swainson, 1832: Genera and species See text Wrens are a family of brown passerine birds in the predominantly New World family Troglodytidae. The male has a long and complex song, with a series of tinkling trills one after the other for seconds on end. Habitat. The cactus wren is about eight inches (21 cm) long. It needs areas with cactus, thorny plants, or … Physical Characteristics. This is a very large brownish wren with very heavy spotting that gathers into a cluster on the upper breast. The wren's song also has trill sounds, which the dunnock does not. Cactus wren - WikiMili, The Free Encyclopedia - WikiMili, The Free Encyclopedia. The family includes 88 species divided into 19 genera. Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Aves Order: Passeriformes Family: Troglodytidae . Common everywhere from Canada to Tierra del Fuego is the house wren (T. aedon); this barred gray-brown species is 12 cm long. The cactus wren lives in desert thickets and areas with large cactus like the cholla. It has a white belly with brown spots, and speckled brown, black and white feathers on its back, wings and head. The male has a long and complex song, with a series of tinkling trills one after the other for seconds on end. Cactus Wren populations declined by about 1.6% per year between 1966 and 2015, resulting in a cumulative decline of 55% over that period, according to the North American Breeding Bird Survey. Partners in Flight estimates the global breeding population at 7 million, with 43% in the U.S. and 57% in Mexico. It has long legs and a long pointed bill. Cactus Wren, Matraca Grande Campylorhynchus brunneicapillus. The largest U.S. species is the 20-cm cactus wren (Campylorhynchus brunneicapillus) of southwestern deserts; it is more common in Mexico. WikiMili. It has black feathers on its throat and a long stripe of white feathers that looks like eyebrows. The cactus wren is found in desert areas of southern California, southern Nevada, Arizona, New Mexico, Utah, western Texas, and Mexico. About 7-8 3/4 inches (18-22 cm) long. Phylum: Chordata: Class: Aves: Order: Passeriformes: Family: Troglodytidae: Genus: Campylorhynchus: Species: Campylorhynchus brunneicapillus: The cactus wren lives in the desert and makes its nest in Cactus trees.