Geococcyx californianus – Greater Roadrunner (Geococcyx californianus)

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Geococcyx californianus

Other articles where Geococcyx californianus is discussed: roadrunner: …species of terrestrial cuckoos, especially Geococcyx californianus (see photograph), of the deserts of Mexico and the southwestern United States. It is about 56 cm (22 inches) long, with streaked olive-brown and white plumage, a short shaggy crest, bare blue and red skin behind the eyes, stout bluish legs, …

Currently no recognized subspecies Hughes, , Pyle No other special status. Unitt indicates that roadrunners are habitat limited and have experienced a reduction in numbers due to urbanization. Greater roadrunner numbers reduced where extensive human settlement or overhunting has occurred Grinnell and Miller Once considered common in San Diego Belding and Stephens , roadrunners, although widespread in range, have undergone population reduction and local extirpation due to urban development Unitt In Hughes ,”Extirpated from the Central Valley in n.

Shuford , Santa Barbara Co. Lehman ; and San Diego Co. Unitt , and likely other s. California counties Garett and Dunn where residential and agricultural development has been extensive. California, and widespread s. California up to 2, meters, McCaskie et al. Lovio observed roadrunners regularly occurring in coastal sage scrub adjacent to suburban development in the vicinity of Sweetwater Reservoir, San Diego Co.

Nesting was also recorded. Regular occurrence and breeding was confirmed for the same area between and Famolaro, field notes. In the late ‘s and early ‘s, Everette recorded nesting in dense cactus patches below the Sweetwater Resevoir Dam Everette Carlson found active nests on U. Monterey County BBA – Roberson and Tenney state that the Greater Roadrunner is a scarce local resident of xeric chaparral, native grasslands, oak savannas and riparian scrub on the margins of the Salinas Valley.

California, Arizona, Texas indicate average territory size per pair ranging between 0. They do appear to be quite opportunistic and creative in foraging strategy. Observations have also been made of them gleaning arthropods from leaves, ambushing prey at feeders Wright , Spofford , nesting boxes Green , mist-nets Barclay , and birds in flight by knocking down low flying birds Sutton in Hughes They have taken young bats which fallen from roost or collided with cave walls Herreid in Hughes Hunts by moving sporadically, stopping to scan for or flushing prey Huhges A variety of arthropods, lizards, snakes, rodents, bats, birds, eggs, and carion have all been taken as food Hughes Grasshoppers comprise an important source Bryant and Parmley , in Cornett Fruit and seeds are consumed with seasonal availability Bryant in Hughes Roadrunners have been hunted throughout the 20th century due to rumors of quail predation Hughes Feeding studies show rare consumption of quail Hughes BREEDING HABITAT: “Areas of mixed open ground and tracts of brush; arid, open land with scattered bushes or thickets; edges of chaparral, where adjoining sparsely vegetated grassland,” mesquite, cholla, tuna cactus, catclaw, suma, buck-brush, and small-sized, thick-folliaged oak trees used for shade, safety-refuge, roosting and nesting, up to feet Grinnelll and Miller Nest usually located in isolated thicket of small trees and bushes, rather than extensive tracts of woody vegetation.

Situation close to open or short-grass area Folse , which is required for courtship display and foraging. Nest site is frequently located adjacent to dry stream bed or livestock path that serves as conveyance route to and from nest during construction and for young in Hughes California, level areas of open ground and tracts of brush and trees Kimsey , and valley floors with extensive expanses of grassland and chaparral W.

Bousman pers. In coastal S. California , found in mixed densities of coastal scrub and chaparral, dominated by sagebrush Artemisia spp.

Famolaro pers. Occasionally observed in riparian edge and open riparian terrace habitats containing scattered willows, oaks, and mulefat P. Rarely reuses nests within same breeding season Woods , Meinzer in Hughes , however, old nests may be used winter roosting Rylander in Hughes Salvia apiana, Rhamnus crocea, Sambucus mexicana, Malocothamnus fasciculatus, Opuntia parryi, Eucalyptus sp.

Carlson field notes may be used for nesting.. Elm Ulmus spp. Nests in neglected farm machinery Sutton and crevices in sandstone cliffs Dawson have been recorded in Hughes One account of nest placed on ground Bryant in Hughes Carlson field notes Hughes unpublished data found that nesting bushes were “less dense on one side and have a greater distance to the lowest branch than that of randomly selected bushes adjacent to the nest site” in Hughes See nest substrate for these plants.

A study in Brewster Co. Texas found the canopy diameter of the nesting bush to be 3. Studies from San Partricio Co, s. Texas and Brewster Co, w. Texas recorded cover values of 8. GROUND COVER: Although roadrunners are typically associated with open scrublands intermixed with grass and forb ground cover, no quantified data are available on the herbaceous cover and degree of openness.

SLOPE: Roadrunners typically occur in flat open scrublands, however, no data are available on degree of slope within a nesting area. Pairs mate for life Terres The pair forages and roosts together and exchanges vocalizations.

Males give “Coo” call from an elevated perch. A stick is offered to the mate of either sex, presumably to stimulate nest-building Whitson Male “prance display,” “tail-wag display,” vocalizations, and food or plant material offering occurs just prior to copulation Whitson and Male circles female following minute copulation, bows, lowers wings, vocalizes, and performs “flick-bow display.

Female eats food offering or provides to young if copulation occurs after hatching Whitson Nest is a compact cup or shallow platform built with stiff twigs. Finer material is used as lining, including leaves, grass, feathers, plant seed or pods, snakeskins, roots, and dry flakes of livestock manure Baicich and Harrison , Hughes Ehrlich et. The female builds the nest, while the male provides nesting materials. Self feeding begins at 16 days Baicich and Harrison Roadrunner eggs have been observed in common raven and northern mockingbird nests Pemberton and Oberholser in Hughes Grinnell and Miller identify an exceptional record at 7, ft.

Fragmentation, in terms of urban and agricultural development, introduces a host of challenges to roadrunners, including but not limited to reduction in available habitat and prey base, vehicle traffic, pets and feral animals, and pesticides. Intensity of activity within managed or developed areas and urbanization may correlate with reduction in reduction roadrunner populations Hughes For instance, irregular use of dirt roads may pose minimal threat to roads runners.

When intensity of vehicle activity increases, the chances of roadrunner injuries or mortality also increase. Mist nets and snare trapping at nest sites resulted in abandonment of nests Vehrencamp and Halpenny in Hughes Pets, feral animals, and racoons are reported as rare causes of mortality among incubating adults Hughes Nest predation rates are highly variable with causes unknown Hughes Sparse exotic vegetation and foliage cover may provide inadequate nesting substrate Hughes Potential mean annual fecundity of 8.

Nest success may be higher earlier in the breeding season when snakes are less active M. Maxon pers. One banded individual was a least 7 years old K. Klimkiewicz pers. Site fidelity is expected among breeding adults, although territorial shifts may occur based on site changes, nest failures Folse in Hughes , or food availability.

BBS trend mapping between and indicate a negative trend of less than Integrate breeding bird census, atlas projects, and Christmas bird count data.

Greater roadrunner – Wikipedia

The greater roadrunner (Geococcyx californianus) is a long-legged bird in the cuckoo family, Cuculidae, from the Aridoamerica region in the Southwestern United States and Mexico.The scientific name means "Californian earth-cuckoo". Along with the lesser roadrunner, it is one of two species in the genus Geococcyx.This roadrunner is also known as the chaparral cock, …

Greater Roadrunner – Geococcyx californianus – NatureWorks

The greater roadrunner is a member of the cuckoo family. It is a ground bird that is about two feet in length. It has speckled brown and black feathers on its back and wings and a lighter throat and chest with dark stripes. It has long legs, a very long tail and yellow eyes. It has a crest on its head and the male has a red and blue patch of skin on the side of its head.

ADW: Geococcyx californianus: INFORMATION

Geococcyx californianus plays both predator and prey roles. It eats, and therefore potentially reduces the populations of, many small vertebrates such as lizards, mice, and other birds. It also consumes insects and other invertebrates.

Greater Roadrunner (Geococcyx californianus)

SPECIES:Greater Roadrunner (Geococcyx californianus) STATUS: No federal or state status at this time. No recognized subspecies. BBS trend data (1966-1999) for California report a negative trend of -3.6% per year. Roadrunners have been locally extirpated from much of coastal southern California (U.S.- Mexico Border to San Francisco Bay Area) and …

Geococcyx californianus in het Nederlands …

Geococcyx californianus: Het woord Geococcyx californianus is bekend in onze database, echter hebben wij hiervoor nog geen vertaling van engels naar nederlands.. Synoniemen voor "geococcyx californianus": roadrunner; chaparral cock; Geococcyx californianus; cuckoo

Greater Roadrunners, Geococcyx californianus, in The …

21-12-2012 · The roadrunner genus Geococcyx has two species: the greater roadrunner (californianus) and the lesser roadrunner (velox). This is a video about two greater r…Author: Melvin Wei

Geococcyx californianus (Lesson, 1829) – GBIF

Geococcyx californianus

Geococcyx species Geococcyx californianus Name Synonyms Geococcyx californicus (Lesson, 1829) Saurothera californiana (Lesson, 1829) Homonyms Geococcyx californianus (Lesson, 1829) Common names Correcaminos grande in Spanish

407 Geococcyx Californianus Photos – Free & Royalty-Free …

Your Geococcyx Californianus stock images are ready. Download all free or royalty-free photos and vectors. Use them in commercial designs under lifetime, perpetual …

Geococcyx californianus – definition of Geococcyx …

Geococcyx californianus synonyms, Geococcyx californianus pronunciation, Geococcyx californianus translation, English dictionary definition of Geococcyx californianus. Noun 1. Geococcyx californianus – speedy largely terrestrial bird found from California and Mexico to Texas chaparral cock, roadrunner cuckoo – any of…