Western Toad


Adult western toad

The western toad (Anaxyrus boreas) is yellow listed (not at risk) in British Columbia. Males lack vocal sacs but may produce repeated chirping sounds if grasped by hand (females usually are silent or emit few chirps).

Map

Biodiversity Interactive Map - Western Toad

Range

  • The range extends along the Pacific Coast from southern Alaska to Baja California, and eastward through the Rocky Mountains to west-central Alberta, Montana, Wyoming, Utah, Colorado, and (formerly) northern New Mexico.
  • Throughout B.C., including Vancouver Island and the Queen Charlotte Islands
  • Columbia Basin: throughout

Habitat

  • Streams, rivers, big lakes, small lakes, upland, wetland, riparian.
  • Western toads occur in a wide variety of habitats ranging from desert springs to mountain wetlands.
  • They spend most of their life in terrestrial habitats but venture to aquatic sites and congregate during the breeding season.

Reproduction

  • Toads will return to traditional breeding sites year after year
  • Breeding occurs in shallow water; period varies?January at low elevations and late spring or summer in the mountains
  • Females deposit up to 12,000 eggs in the form of a long egg string which can be several metres long
  • Tadpoles form schools that may consist of millions of individuals which metamorphose in 6 to 10 weeks
  • Toadlets emerge from natal ponds in mid to late summer and head for terrestrial habitat in large aggregations during which time they are particularly susceptible to predation and road mortality

Listing and Date

Listing Date
B.C. List not at risk
COSEWIC SC Nov 2002
SARA S1

Threats to Species

  • The practice of stocking lakes with fish where they would not naturally occur.
  • Habitat loss and degradation
  • Road traffic, disease, pesticides, and contaminants
  • Predation or competition with introduced species
  • Global warming and increased UV-B

Select Reports

For more information on this species, visit The Species at Risk Public Registry and/or The BC Species and Ecosystem Explorer where your should enter ?western toad" in the species Name field.

 

SPECIES

Amphibians
Columbia Spotted Frog
Long-toed Salamander
Northern Leopard Frog
Western Toad

Birds
Common Nighthawk
Great Blue Heron
Harlequin Duck
Lewis’s Woodpecker
Northern Goshawk
Sharp-tailed Grouse
Vaux’s Swift
Western Screech Owl
Yellow Warbler
Yellow-breasted Chat

Fish
Bull Trout
White Sturgeon

Flora
Common Camas
Whitebark Pine

Mammals
Badger
Big Brown Bat
Rocky Mountain Bighorn Sheep
Elk
Grizzly Bear
Selkirk Least Chipmunk
Moose
Mountain Caribou
Mountain Goat
Mule Deer
California Myotis
Fringed Myotis
Little Brown Myotis
Long-eared Myotis
Long-legged Myotis
Northern Myotis
Yuma Myotis
Silver-Haired Myotis
Townsend's Big-eared Bat
White-tailed Deer
Wolverine
Yellow-pine Chipmunk

Reptiles
Western Painted Turtle
Western Yellow-bellied Racer
Western Skink

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