Anaxyrus boreas halophilus

The California Toad (Anaxyrus boreas halophilus)

The California toad, scientifically known as Anaxyrus boreas halophilus, is a distinct subspecies of the western toad. It is primarily found throughout the state of California, with the notable exception of the southeastern desert regions. This subspecies is recognized for its less blotched dorsal pattern compared to the boreal toad, a wider head, larger eyes, and smaller feet. Typically, adult California toads measure between two to five inches in length.

Habitat and Distribution

The range of the California toad extends from northern California down into Baja California. While they generally avoid extensive desert areas, scattered populations can be found in isolated desert locales, such as within the Mojave Desert. Their preferred habitats are varied, encompassing woodlands, grasslands, and meadows, as well as more developed areas like suburban backyards and parks. For reproduction, they seek out aquatic environments including lakes, creeks, ponds, reservoirs, slowly flowing streams, and canals.

Diet and Behavior

As an opportunistic feeder, the California toad consumes a broad spectrum of insects and other invertebrates. Their diet commonly includes grasshoppers, beetles, flies, and mosquitos. An interesting behavioral characteristic is their mode of locomotion; they walk rather than hop.

Reproduction

The breeding season for the California toad typically spans from January to July, with spawning events occurring later at higher elevations. Many populations are known for aggregation breeding, where large numbers of toads congregate at suitable marsh or pond spawning sites. During this period, males recognize females through amplexus. Females lay a substantial number of eggs, often exceeding 16,000 per individual, in shallow water, typically arranged in long strings.