Branta
canadensis
(Canada
Goose)
Physical
Description:
Size: 22-45" (56-92 cm).
The most common goose in North America. Adults
have a black head, neck, and bill
and white cheek patches. Body gray to brown. Lower belly, upper and lower tail
coverts white. Tail and rump black. Great variation in size and neck length
between populations.
Similar Species- None in Idaho.
Song:
A
deep, loud, musical Ha-Honk! Often made in flight with other Canada Geese.
Distribution:
Breeds
from northern Alaska, east to Labrador and Greenland, and south to southeastern
Canada, California, Utah, and northern Arkansas. Winters from Alaska and southern
Canada, south to Florida, Gulf Coast, and northern Mexico. In North America,
many introduced non-migratory populations exist within and outside normal range.
Habitat:
Found in various habitats near water,
from temperate regions to tundra. During migration and in winter, found on coastal
and freshwater marshes, lakes, rivers, and fields. In Idaho, occurs in variety
of habitats, including lakes, reservoirs, rivers, farmlands, and city parks.
Diet:
Grazes on marsh grasses, sprouts of winter
wheat in spring, and grains in fall. Eats clover, cattails, bulrushes, algae,
pondweed, and other plants. Also eats mollusks and small crustaceans.
Ecology:
Highly social species. Builds nest on
ground, usually near water. Feeds in shallows, marshes, and fields. Usually
feeds in early morning and late afternoon. May be active day or night during
migration. In one study, mean annual
survival rate for Rocky Mountain birds banded on neating areas was 53% (immatures)
and 64% (adults). Large resident population exist in southern Idaho; during
winter, northern migrants are present throughout state. Populations through
out state have been enhanced through artificial nest platforms. Species is sometimes
considered an agricultural pest. A study initiated by the Idaho Dept. Fish &
Game in southwestern Idaho in 1993 is estimating population size and trend and
examing factors affecting mortality
rates.
Conservation:
Element Code: | ABNJB05030 |
Status: | Game species |
Global Rank: | G5 |
State Rank: | S5 |
National Rank: | N5B,N5N |
Important
State References:
Krohn, W.B. and E.G. Bizeau.
1980. The Rocky Mountain population of the western Canada goose: its distribution,
habitat and management. USDI Fish and Wildl. Serv. Spec. Sci. Rpt. Wildl. No.
229. 93pp.