Geographic Range
White-fronted geese (
Anser albifrons
) reside in the Palearctic and Nearctic regions of the world. During the summer, in
the Nearctic region, white-fronted geese are found in northern Alaska and northwestern
Canada. In the Nearctic region, their wintering grounds are in the Gulf Coast region
of North America. The second major population of white-fronted geese is found in the
Palearctic region of the world. White-fronted geese are known to spend their summers
in Greenland and their winters in the United Kingdom.
- Biogeographic Regions
- nearctic
- palearctic
- Other Geographic Terms
- holarctic
Habitat
In the summer, during the breeding season, white-fronted geese prefer to reside in
riparian areas and the edges of aquatic areas such as lakes, streams, rivers and marshes.
White-fronted geese are highly dependent on brush cover and woody vegetation. Nests
usually occur on the ground, within 300 feet of water. White-fronted geese migrate
south in the winter. Their preferred winter habitat includes agricultural lands with
shallow standing water. If agricultural land is unavailable, they will also reside
in freshwater marshes. Migration and wintering grounds do not differ.
- Habitat Regions
- temperate
- freshwater
- Terrestrial Biomes
- tundra
- taiga
- savanna or grassland
- Aquatic Biomes
- lakes and ponds
- rivers and streams
- temporary pools
- coastal
- Other Habitat Features
- agricultural
- riparian
Physical Description
White-fronted geese have a white band at the base of their bill, which is where this
species gets its name. There is no differentiation in plumage between males and females,
although males are usually larger than females. Feathers are typically a light brown
on their neck, back and head. Their rear consists of darker brown feathers with white
tips. Their belly is white. Their feet are orange and their beak has a pinkish tint.
Their mass ranges from 1.93 to 3.31 kg, with a mean of 2.72 kg. They have a length
of 64 to 84 cm and wingspan of 51 to 65 cm.
- Other Physical Features
- endothermic
- bilateral symmetry
- Sexual Dimorphism
- male larger
Reproduction
White-fronted geese are monogamous and form lifelong pair bonds. Bond forming occurs
in the fall and into the early spring. White-fronted geese are unique because the
young participate in cooperative breeding. Offspring remain with their parents for
1 to 2 years. The yearlings partake in defending the nest from predators.
- Mating System
- monogamous
- cooperative breeder
White-fronted geese breed once a year in the summer, beginning in late May. Clutches
may include 4 to 7 eggs per season. Incubation lasts 27 days on average. Maturity
in white-fronted geese is reached at 3 years of age. Young remain with their parents
for an entire year. The young are even known to remain with the adults during the
following years nesting activities.
- Key Reproductive Features
- iteroparous
- seasonal breeding
- gonochoric/gonochoristic/dioecious (sexes separate)
- sexual
- oviparous
Adult white-fronted geese are highly involved in parenting. With a long incubation
period, nest protection and nest sitting is required from both sexes. Once hatched,
the parents are heavily involved in rearing the offspring. Juveniles remain with parents
for at least one year. During that year, adults guide offspring to winter habitats
and teach foraging techniques. Additionally, they are taught how to rear their own
offspring the following summer by aiding parents in clutch rearing.
- Parental Investment
- altricial
- male parental care
- female parental care
- post-independence association with parents
- extended period of juvenile learning
Lifespan/Longevity
The longest lived wild white-fronted goose was 20.3 years old. In captivity, the maximum
age achieved was 47 years old.
Behavior
White-fronted geese are a social species. They have long lasting family bonds that
result in breeding cooperation. White-fronted geese remain in groups of less than
30 after breeding, until molting. Outside of the breeding and molting period, white-fronted
geese are known to be in large flocks that can contain up to 30,000 individuals. During
migration, white-fronted geese are known to fly during the night time hours.
- Key Behaviors
- flies
- nocturnal
- crepuscular
- motile
- migratory
Home Range
Outside of migration, white-fronted geese remain close to their nesting and routing
sites. Foraging occurs within 20 km of their roosting site but white-fronted geese
tend to remain within 4 km of their nests.
Communication and Perception
White-fronted geese mainly communicate visually and acoustically. Acoustically, these
geese use a serious of honks to communicate and warn individuals. Additionally, white-fronted
geese are known to use postures and hisses to communicate boundaries to foes.
Food Habits
White-fronted geese are primarily herbivorous. They feed on grasses, grains and berries.
During the breeding season, white-fronted geese are known to feed on mollusks and
aquatic insects. In the winter, white-fronted geese become exclusively herbivorous.
During early winter waste, crops such as rice, soybeans and grains are eaten. In late
winter, their diet shifts towards newly sprouted grasses and forbs. Their primary
forage items include
white clovers
,
creeping buttercups
,
common dandelions
,
cockspur grasses
,
meadow barley
,
ryegrasses
,
bulbous foxtails
,
pendantgrasses
and
marsh arrowgrasses
.
- Animal Foods
- insects
- mollusks
- aquatic or marine worms
- Plant Foods
- leaves
- roots and tubers
- wood, bark, or stems
- seeds, grains, and nuts
- fruit
Predation
Predation of white-fronted geese occurs mainly on eggs and hatchlings during the breeding
season. Birds such as
glaucous gulls
and
jaegers
feed on unprotected eggs in the nests.
Arctic foxes
and
red foxes
also feed on unprotected eggs and goslings. Cooperative breeding of white-fronted
geese is a significant anti-predator defense, having yearlings protect the nest is
extremely beneficial in preventing fox predation.
- Anti-predator Adaptations
- aposematic
Ecosystem Roles
White-fronted geese can play an important role in wetland restoration and management.
Seeds are constantly ingested and can be transported from wetland to wetland during
migration. During the breeding season, eggs and yearlings can be a food source for
many predators.
- Ecosystem Impact
- disperses seeds
Economic Importance for Humans: Positive
In the United States, white-fronted geese are a valued game species for hunters. Hunters
provide funding to preserve wetland habitats by the purchase of the federal duck stamp.
Additionally, white-fronted geese are a good food source for humans.
- Positive Impacts
- food
- body parts are source of valuable material
Economic Importance for Humans: Negative
White-fronted geese can easily become a nuisance animal to humans. Grains are one
of the main food items that white-fronted geese eat. Crop damage may ensue from over-grazing;
this can be assumed as their preferred wintering grounds are agricultural lands.
- Negative Impacts
- crop pest
Conservation Status
Overall, populations of white-fronted geese are stable. In the 1970's, a population
in Greenland was threatened. Numbers dropped significantly due to habitat losses.
After legislation was passed, the population recovered within twenty years and is
no longer of concern. In the United States, white-fronted geese are protected by the
Migratory Bird Act.
Additional Links
Contributors
Sam Schellinger (author), University of Wisconsin - Stevens Point, Christopher Yahnke (editor), University of Wisconsin-Stevens Point, Leila Siciliano Martina (editor), Texas State University.
- Nearctic
-
living in the Nearctic biogeographic province, the northern part of the New World. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico.
- native range
-
the area in which the animal is naturally found, the region in which it is endemic.
- Palearctic
-
living in the northern part of the Old World. In otherwords, Europe and Asia and northern Africa.
- native range
-
the area in which the animal is naturally found, the region in which it is endemic.
- holarctic
-
a distribution that more or less circles the Arctic, so occurring in both the Nearctic and Palearctic biogeographic regions.
Found in northern North America and northern Europe or Asia.
- temperate
-
that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).
- freshwater
-
mainly lives in water that is not salty.
- tundra
-
A terrestrial biome with low, shrubby or mat-like vegetation found at extremely high latitudes or elevations, near the limit of plant growth. Soils usually subject to permafrost. Plant diversity is typically low and the growing season is short.
- taiga
-
Coniferous or boreal forest, located in a band across northern North America, Europe, and Asia. This terrestrial biome also occurs at high elevations. Long, cold winters and short, wet summers. Few species of trees are present; these are primarily conifers that grow in dense stands with little undergrowth. Some deciduous trees also may be present.
- tropical savanna and grassland
-
A terrestrial biome. Savannas are grasslands with scattered individual trees that do not form a closed canopy. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.
- savanna
-
A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. See also Tropical savanna and grassland biome.
- temperate grassland
-
A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Fire and grazing are important in the long-term maintenance of grasslands.
- coastal
-
the nearshore aquatic habitats near a coast, or shoreline.
- marsh
-
marshes are wetland areas often dominated by grasses and reeds.
- swamp
-
a wetland area that may be permanently or intermittently covered in water, often dominated by woody vegetation.
- agricultural
-
living in landscapes dominated by human agriculture.
- riparian
-
Referring to something living or located adjacent to a waterbody (usually, but not always, a river or stream).
- monogamous
-
Having one mate at a time.
- cooperative breeder
-
helpers provide assistance in raising young that are not their own
- iteroparous
-
offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).
- seasonal breeding
-
breeding is confined to a particular season
- sexual
-
reproduction that includes combining the genetic contribution of two individuals, a male and a female
- oviparous
-
reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.
- altricial
-
young are born in a relatively underdeveloped state; they are unable to feed or care for themselves or locomote independently for a period of time after birth/hatching. In birds, naked and helpless after hatching.
- male parental care
-
parental care is carried out by males
- female parental care
-
parental care is carried out by females
- nocturnal
-
active during the night
- crepuscular
-
active at dawn and dusk
- motile
-
having the capacity to move from one place to another.
- migratory
-
makes seasonal movements between breeding and wintering grounds
- visual
-
uses sight to communicate
- acoustic
-
uses sound to communicate
- aposematic
-
having coloration that serves a protective function for the animal, usually used to refer to animals with colors that warn predators of their toxicity. For example: animals with bright red or yellow coloration are often toxic or distasteful.
- food
-
A substance that provides both nutrients and energy to a living thing.
- herbivore
-
An animal that eats mainly plants or parts of plants.
- frugivore
-
an animal that mainly eats fruit
- granivore
-
an animal that mainly eats seeds
- endothermic
-
animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.
- bilateral symmetry
-
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
- visual
-
uses sight to communicate
- tactile
-
uses touch to communicate
- acoustic
-
uses sound to communicate
- chemical
-
uses smells or other chemicals to communicate
References
Birdlife International, 2012. " Anser albifrons " (On-line). IUCN Red List of Threatened Species. Accessed August 18, 2013 at http://www.iucnredlist.org/details/22679881/0 .
Birdlife International, 2004. "Species factsheet: Anser albifrons " (On-line). BirdLife International. Accessed August 18, 2013 at http://www.birdlife.org/datazone/speciesfactsheet.php?id=376 .
Ely, C., D. Raveling. 2011. Seasonal Variation in Nutritional Characteristics of the Diet of Greater White-Fronted Geese. Journal of Wildlife Management , 75/1: 78-91.
Fox, A., D. Stroud. 1988. The breeding biology of the Greenland White-fronted Goose ( Anser albifrons flavirostris ). Bioscience , 27: 1-14.
Tesky, J. 1993. "Index of Species Information Wildlife Species: Anser albifrons " (On-line). Accessed August 18, 2013 at http://www.fs.fed.us/database/feis/animals/bird/anal/all.html .
Warren, S., A. Fox, A. Walsh, P. O'Sullivan. 1993. Extended Parent-Offspring Relationships in Greenland White-fronted Geese ( Anser albifrons flavirostris ). The Auk , 110/1: 145-148.
2013. " Anser albifrons White-fronted goose" (On-line). Encyclopedia of Life. Accessed August 18, 2013 at http://eol.org/pages/1048438/details .
National Audubon Society, Inc. 2013. "Greater White-fronted Goose ( Anser albifrons )" (On-line). Audubon. Accessed August 18, 2013 at http://birds.audubon.org/birds/greater-white-fronted-goose .
2013. "White-fronted Goose" (On-line). Ducks Unlimited. Accessed August 18, 2013 at http://www.ducks.org/hunting/waterfowl-id/white-fronted-goose .