This species is …
Western spadefoot toads typically inhabit lowland habitats such as washes, river floodplains , alluvial fans, playas, and alkali flats (Stebbins 1985). Western Spadefoot Toad. Predators: Small mammals, bullfrogs, raccoons, garter snakes: Breeding Season: January to May: Mode of Reproduction: Oviparous (egg laying) Clutch Size: ... Western Spadefoot Toad Range Map Western Spadefoot Toad Western Spadefoot Toads Published on April 30th 2017 by staff under Toads. Western spadefoot toad larvae resemble those of other Spea species in that both cannibal and non-cannibal morphotypes display coloration that is variable relative to their habitat. Article was last reviewed on 30th September 2019. The spadefoot toads of North America possess the usual array of toad-like features, including a round and stocky body, with protruding eyes and short feet. The presence of these predators may impair recruitment by western spadefoot toad (Jennings and Hayes 1994). These protrusions are thus called 'spades' due to their functional similarities to the digging tool of the same name. Spadefoot toads also have pectoral glands above their bellies that contain poison. Spadefoot toads are rarely seen because of their unusual habits. The following recordings were made at night in early March at shallow rain pools (shown below …
It has been observed at elevations ranging from sea level to almost 4,600 feet (1,400 meters). The call of the Western Spadefoot is a short loud trill, like a quick snore, lasting less than one second. Normally this would be a problem for an amphibian, but spadefoot toads are able to deal with the hot and dry weather as spadefoot toads spend most of their time underground. Scaphiopus hammondii - Western Spadefoot Toad (Storer 1925) Conservation Issues (Conservation Status) This spadefoot has lost an extensive amount of habitat in the central valley due to urban and agricultural development of land that formerly supported the formation of temporary rain pools. They are usually found in Western North American deserts like the Mojave, Chihuaha, and Sonoran. According to the Virginia Herpetological Society, these amphibians expel musky secretions that are irritating to predators' mucous glands if consumed. 1925). Scientific Name: Spea hammondii Status: California species of special concern Distribution: The western spadefoot is found in California’s Central Valley and adjacent foothills and in the Coast Ranges just south of Monterey County to northern Baja California, Mexico. Western spadefoot toads and southern spadefoot toads lack a cranial boss (a ridge between the eyes).
Spadefoot toads have numerous defenses to deter predators like snakes, birds and other frogs. They also show a uniform iridescence in their pigmentation.
The vertically oriented … Spea hammondii (Baird, 1859, "1857") Western Spadefoot . Their name is derived from the hard, keratinous protrusions in their hind feet, which allows them to efficiently dig backwards into the soil.
There are two recognizable groups of North American spadefoot toads, Scaphiopus (Holbrook, 1836) and Spea (Cope, 1863). Males call at night while floating on the water, often in large aggregations. Steven R. Morey 1.
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