Shared Flashcard Set

Details

American Wildlife
Geese
18
Environmental Studies
Undergraduate 4
10/15/2011

Additional Environmental Studies Flashcards

 


 

Cards

Term
[image]
Definition
  • Greater White-fronted Goose
  • Circumpolar, breeds in arctic and winters in central valley, Mexico, gulf states
  • migratory
  • General Goose habitat
  • General goose diet
  • 4-6 eggs
  • General goose reproduction
  • Increasing, common, 1970s decline in Pacific Flyways
Term
[image]
Definition
  • Snow Goose (also has "Blue Goose" morph, with grey body and white head/neck)
  • Breed in arctic, Siberia, Japan to Mexico, gulf coast, and US
  • Migratory
  • General goose habitat
  • general goose diet
  • 3-5 eggs
  • Colonial breeder, travel in large groups
  • Increasing exponentially, overabundant, 4.5 million, thrives in ag areas, habitat destruction
  • Blue Goose rare in West, common gulf coast

 

Term
[image]
Definition

"Blue Goose"

Same as Snow Goose

Term
[image]
Definition
  • Ross' Goose
  • Breeds arctic Canada winters in CA, SW US, Gulf Coast
  • Migratory
  • General goose habitat
  • General goose diet
  • 4 eggs
  • General, breed on islands in tundra lakes
  • Increasing, 1 million currently
Term
[image]
Definition
  • Canada Goose
  • Breed in Alaska, Canada to N. US to S. and coastal US
  • Migratory, some resident
  • General goose habitat, often near people
  • general goose diet, lots of grain/lawn
  • 5 eggs
  • General goose reproduction, nest on small islands
  • Increasing, most common goose in N.A., overabundance, increasing resident populations 5.9 to 11.3% growth/year
  • Aleutian Canada Goose threatened, artic fox on breeding islands, 800-->15,000
Term
[image]
Definition
  • Brant, probably use speciman
  • Breed in AK+N. Canada to US coasts+Baja CA
  • Migratory
  • Breed in tundra, winter range=coasts/bays/estuaries
  • General goose diet, EELGRASS
  • 3-4 eggs
  • General goose repro
  • Disease of eelgrass in 1930s hurt populations, now they've recovered, populations increasing
Term
[image]
Definition
  • Trumpeter Swan
  • Winters along west caost canada+N US+Yellowstone, breeds in AK+canada
  • Most migratory
  • General goose habitat
  • General goose diet+small invertebrates
  • 4-6 eggs
  • General repro, often use muskrat house as base for nest
  • Increasing, formerly ranged all N. America but hunted for meat/feathers, pushed out of breeding grounds for development+Ag
Term
[image]
Definition
  • Tundra Swan
  • Breed in N. Coast of Canada+AK winter in NW US+Central East
  • Migratory
  • General goose habitat
  • General goose diet
  • 3-5 eggs
  • platform nests, nest earlier in year when tundra conditions are impassible
  • Incresaing
Term
[image]
Definition
  • Wood Duck
  • Most of continental US
  • Some migratory, lots of resident
  • General habitat but favor woods
  • General diet+acorn/berries
  • 9-12 eggs
  • Nest in tree cavity near water, female dump eggs in other nests
  • Near extinction 1900s, nest manipulation helped pop, increasing
Term
[image]
Definition
  • Gadwall
  • Breed in N. US/coastal AK/Central Canada, winters down to Mexico/US
  • Migratory
  • General habitat, will breed in grass away from water
  • General diet, nuts/small vertebrates
  • 9-11 eggs
  • General reproduction
  • increasing, range expanding east
Term
[image]
Definition
  • American Widgeon (eyepatch is iridescent)
  • Breed N. US/Canada/AK winter in Mexico/Coastal US
  • Migratory
  • General habitat+fields
  • General diet+grass
  • 7-8 eggs
  • General repro
  • Increasing+expanding East
Term
[image]
Definition
  • American Black Duck (purple speculum)
  • Breed in NE N. America, winter in SE N. America
  • Migratory
  • General habitat +sea/lagoons in winter
  • General diet
  • 9-10 eggs
  • General repro
  • Stable, previous declines b/c competation/hybridization w/ mallards
Term
[image]
Definition
  • Mallard
  • N. hemisphere, Africa, India
  • Some resident
  • General habitat
  • General diet
  • 9 eggs
  • General reproduction, males gang up on females
  • Stable, most common duck in world, 10 million in US
Term
[image]
Definition
  • Blue-winged Teal
  • Canada to N. S. AMerica,
  • Migratory
  • General habitat
  • General diet, lots of grain in fall
  • 10 eggs
  • General repro
  • Stable
Term
[image]
Definition
  • Cinnamon Teal (has green speculum)
  • SW Canada to S. America
  • Migratory
  • General habitat+Alkaline wetlands
  • General diet
  • 9-11 eggs
  • General repro
  • Stable

 

Term
[image]
Definition
  • Northern Shoveler (green speculum)
  • N. hemisphere to S. AMerica, S. Eurasia+E. Africa
  • Migratory, some resident
  • general habitat
  • Strain vegetation+invertebrates from surface of water
  • 9-11 eggs
  • General repro
  • Increasing
Term
[image]
Definition
  • Northern Pintail
  • W. hemisphere to N. S. America, Africa, India
  • Migratory
  • Typical habitat, some breed in tundra
  • Typical diet
  • 7-8 eggs
  • General repro, sometimes nest far from water
  • Declining, longer-lived than most ducks, large pop swings
Term
[image]
Definition
  • Green-winged Teal
  • N. to Central America/West Indies
  • Migratory
  • Typical habitat
  • General diet, eats tadpoles in summer/grain in winter
  • 10-12 eggs
  • general repro
  • stable
Supporting users have an ad free experience!