Billy Frank Jr. NisquallyWhere the River Meets the Sound |
Where the River Meets the Sound. An introduction to Billy Frank Jr. Nisqually National Wildlife Refuge (NWR) in Washington. Published by the U.S. Fish & Wildlife Service (USFWS).
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Welcome Educator!
Thank you for choosing to bring your students to
Nisqually National Wildlife Refuge! We are happy
that you are using the Refuge’s resources to
enhance the learning experience for your
students.
With the help of this guide, we hope that field trips
to the Refuge delight the senses and nurture an
ongoing process of discovery. The guide includes
information about the Refuge’s habitats and
wildlife, as well as the environmental education
program: field trip planning, pre-field trip and postfield trip activities, and hands-on field trip
activities.
Our approach to learning is comprehensive,
integrated and hands-on. Field trip activities are
designed to compliment in-class learning,
teacher’s objectives, and meet state requirements
for environmental education. We believe that our
role as educators is to awaken in students the
following:
Awe and delight in nature with respect for all
life forms
A foundation of practical ecological knowledge
A sense of belonging to a special human niche
within the natural world
A feeling of accountability for human impacts
upon the environment
Sensitivity towards diverse interests and
cultural perspectives
The skills to identify and resolve environmental
problems
Together as educators, we have an opportunity to
increase environmental awareness throughout our
communities. We look forward to working with
you!
Nisqually National Wildlife Refuge
1
Educator’s Guide, Introduction
US Fish & Wildlife Service
The Fish and Wildlife Service (FWS), within the U.S. Department of
the Interior, is the principal agency through which the United States
government carries out its responsibilities to care for the country’s
wildlife and their habitats. Migratory birds, endangered species,
certain marine mammals, and freshwater and anadromous fish are
all wildlife resources managed by the FWS. Some of the natural
resource programs within the agency include:
Endangered Species
The FWS leads the Federal effort to protect and restore animals and plants that are in danger
of extinction both in the United States and worldwide. Using the best scientific evidence
available, FWS biologists identify species that appear to be endangered or threatened. After
review, species may be placed on the Interior Department’s official “List of Endangered and
Threatened Wildlife and Plants.” FWS biologists, along with other partners, then develop
recovery plans for the species that include research, habitat preservation and management,
and other recovery activities.
Migratory Birds
Because many bird species fly thousands of miles in their
annual migrations, conservation by any single state or nation
alone is not possible; cooperative efforts by each are required.
The United States government is responsible for coordinating
migratory bird conservation under several laws and
international treaties with Canada, Mexico, Japan and Russia.
The FWS is responsible for the conservation of more than 800
species of migratory birds; it regulates hunting, studies bird
populations, and acquires and manages many national wildlife
refuges to provide secure habitat for migratory birds.
Fisheries
Restoring nationally significant fisheries that have been depleted by overfishing, pollution or
habitat damage is a major effort of the FWS. Research laboratories study fish health, genetics,
ecology, nutrition and other topics to provide the information needed to raise fish in hatcheries
and restore wild fish
populations. As part of this
program, nearly 80 national
fish hatcheries produce some
50 species of fish. The FWS
stocks more than 160 million
fish annually.
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
Federal Aid
Through a system of excise taxes on fishing and hunting equipment, more than $50 million per
year is distributed to states for fish and wildlife management. Grants to states fund the
purchase and development of critical habitat and research on endangered species.
Law Enforcement
The FWS enforces Federal laws that protect endangered species, migratory birds, marine
mammals, and fisheries. The FWS carries out U.S. enforcement obligations under international
agreements. Special agents work to prevent exploitation of game and nongame species, such
as the interstate transportation of illegally taken wildlife. Wildlife inspector stations at major
ports of entry check the legality of documents and permits and inspect shipments of live
animals and wildlife products to ensure that protected species are not imported or exported
illegally.
National Wildlife Refuge System
The National Wildlife Refuge System is the world’s largest and most diverse collection of lands
and waterways set aside specifically for wildlife. Over 552 refuges stretch across the continent
and over to the Pacific Islands. They range in size from Minnesota’s tiny Mille Lacs (less than 1
acre) to Alaska’s sprawling Yukon Delta (approximately 20 million acres). Many early refuges
were created for herons, egrets and other water birds; others were set aside for large
mammals like elk and bison, but most have been created to protect migratory waterfowl.
Today, national wildlife refuges play a vital role in preserving endangered and threatened
species. They provide secure habitat for native plants and many species of resident mammals,
fish, insects, amphibians and reptiles. National wildlife refuges offer a wide variety of
recreational opportunities, and many refuges have visitor centers, wildlife trails and
environmental education programs. Small or large, each refuge provides vital habitat for at
least a portion of America’s wildlife populations.
The Blue Goose:
The Symbol of the National Wildlife Refuge System
“Whenever you meet this sign, respect it. It means that the land behind the
sign has been dedicated by the American people to preserving, for
themselves and their children, as much of our native wildlife as can be
retained along with modern civilization.” – Rachel Carson
Why a Blue Goose?
The Blue Goose has been used on refuge boundary signs markers,
entrance signs, brochures, and exhibits since 1936. It was designed by
Pulitzer Prize-winning editorial cartoonist J.N. “Ding” Darling, while he was
chief of the U.S. Biological Survey in 1934-1935. There are over 548
national wildlife refuges in all 50 states protecting over 150 million acres of
land and water. Each national wildlife refuge is identified by a posted sign
with the emblem of a “blue goose”. The Blue Goose was adopted as the
official symbol of the National Wildlife Refuge System in 2003.
Nisqually National Wildlife Refuge
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Look for
The Blue Goose
while you’re
visiting
Nisqually National
Wildlife Refuge!
Educator’s Guide, Introduction
Nisqually National Wildlife Refuge
Nisqually National Wildlife Refuge (NWR) is located 8 miles northeast of Olympia, Washington
on the biologically rich Nisqually River Delta. Here, the freshwater of the Nisqually River
combines with the saltwater of Puget
Sound to form an estuary rich in
nutrients and detritus. These nutrients
support a web of sea life – the
benefits of which extend throughout
Puget Sound and beyond.
Together with McAllister and Red
Salmon Creeks, the Nisqually River
forms one of the largest remaining
relatively undisturbed estuaries in
Washington. Although most major
estuaries in Washington have been
filled, dredged or developed, the
estuary of the Nisqually River has
been set aside especially for wildlife.
In 1974, Nisqually NWR was
established to protect the delta and its
diversity of fish and wildlife habitats. These diverse habitat types include salt marsh and mud
flats, freshwater marshes, estuary, mixed forests, and riparian forests.
As surrounding wildlife habitat is
lost to development, Nisqually
NWR becomes an increasingly
important place for wildlife,
especially migratory birds. For
some birds, the Refuge is a place
to feed and rest before continuing
on, while for others it is the end of
their season’s journey.
Over 300 species of birds,
mammals, fish, reptiles and
amphibians inhabit Nisqually NWR,
making it an excellent place to
observe and study wildlife. The
Refuge provides abundant
opportunities for wildlife-dependent recreation. Hiking, wildlife observation, wildlife
photography, fishing and environmental education all allow visitors to learn more about the
natural world and the importance of places rich in beauty and biological diversity. National
Wildlife Refuges are set aside specifically to provide and protect habitat for wildlife. Refuge
managers take care to ensure the activities of refuge visitors do not conflict with the needs of
the wildlife using the refuge.
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
A History of the Nisqually Delta
The first people to inhabit the place that is now the
Nisqually National Wildlife Refuge were the ancestors
of the Nisqually Tribe, the Squally-Absch, people of the
river, people of the grass country. For thousands of
years, they fished the Nisqually River, building
seasonal villages along its banks. The Nisqually also
used the estuary and mudflats to harvest shellfish.
1830’s and 40’s — Hudson’s Bay Company
established Fort Nisqually and began farming in the area.
Nisqually Tribal member harvesting cattails.
1846 — The McAllister and Shazer families began farming the Nisqually
delta. The McAllister family lived for a year in the trunks of a few cedar
trees while building their log cabin.
1854 — Medicine Creek Treaty signed at the Treaty Tree just north
of I-5. This treaty was signed on the banks of present-day McAllister
Creek by representatives of all Native American tribes in the South
Puget Sound area as well as representatives of the U.S. government,
including Governor Stevens and the President of the United States. The
treaty sought to end wars and establish fishing, hunting and reservation
rights.
Chief Leschi signed the
Medicine Creek Treaty.
1904 — The delta area was sold to Alson Brown, who
constructed a 5-mile earthen dike to create more
farmable land. The farm had a dairy, chickens, hogs, an
orchard and honey bees, and produced hay for feed.
The farm operated successfully for about 15 years
under Brown’s direction and was sold to several
successive owners who continued to farm it sporadically
for the next 50 years.
1967 — Washington Department of Fish & Wildlife (then
Department of Game) purchased 616 acres of Delta
tidelands and salt marshes.
Workers outside the living quarters
on the Brown Farm.
1968 — The Brown farm was up for sale again. Farming on
the delta wanes. The Port of Tacoma proposes to build a
deep water port facility near the mouth of the Nisqually
River. Margaret McKenny organized opposition to the
proposal and catalyzed support for protection of the delta
from resource degradation.
Harvesting hay on the farm.
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
1974 — An extensive lobbying effort by local citizens, the Nisqually River Task Force, and the
US Secretary of the Interior resulted in the purchase of Brown Farm and transfer to the US
Fish & Wildlife Service for management as a National Wildlife Refuge. This also protected the
delta from another plan to develop a landfill for Pierce and King Counties’ garbage.
1995-96 — Major flooding on the Nisqually River caused significant
damage to the Brown Farm Dike, Refuge trails and other
infrastructure. Money was appropriated from Congress to repair trails
and buildings as well as implement habitat restoration.
1999 — The Refuge completed the construction of a new Visitor
Center, administrative offices, and the Twin Barns Loop Trail
boardwalk.
2001 — The Twin Barns Education Center closed following the
Nisqually Earthquake.
2004 — A 15–year management plan is adopted which describes
major changes to the habitats, trails, public use, and environmental
education.
The Epicenter of the Nisqually
earthquake was 2 miles from
the Twin Barns.
2009 — After two years of work, 762 acres of diked
habitat is reconnected to the tides of Puget Sound. A
portion of the Nisqually Estuary Trail is opened. A new
Environmental Education Center is completed.
2010 —The Nature Explore Area, an integrated outdoor
exploration area, is completed. Another portion of the
Nisqually Estuary Trail Boardwalk is completed.
2011 — The Nisqually Estuary Trail Boardwalk is
completed including an Observation Tower, Blind, two
Viewing Platforms and meets ADA standards.
Removing the Brown Farm Dike.
The Nature Explore Area (Music and Movement Space) with
Environmental Education Center in background.
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
Refuge Management
Purpose
All national wildlife refuges have purpose for which they were established. Refuge managers
must consider this purpose first and foremost when making decisions about how to manage
the Refuge. Nisqually NWR was established in 1974 “...for use as an inviolate sanctuary, or for
any other purpose, for migratory birds.”
Refuge Goals
• To conserve, manage, restore and enhance native habitats and associated plant and
wildlife species representative of the Puget Sound lowlands.
• To support recovery and protection efforts for Federal and State threatened and
endangered species, species of concern, and their habitats.
• To provide quality environmental education opportunities focusing on the fish, wildlife and
habitats of the Nisqually River delta and watershed.
• To provide quality wildlife-dependent recreation, interpretation and outreach opportunities
to enhance public appreciation, understanding and enjoyment of fish, wildlife, habitats
and cultural resources of the Nisqually River Delta and watershed.
Refuge Resources
• Migratory Birds
• Significant Wildlife Habitat
• Endangered and Threatened Species
Why is it necessary to manage the resources?
• Loss of habitat due to development
• Pollution from urban runoff, industrial and agricultural activities
• Introduction of nonnative plants and animals
• Trash such as styrofoam and fishing line
How does the Refuge staff manage these resources?
• Designs, develops and implements restoration plans to improve wildlife habitat
• Monitors the populations of endangered species and migratory birds
• Conducts programs to educate people about the value of the resources
• Acquires additional land to protect and restore
• Controls nonnative plants and animals and re-plants native species
• Controls water levels
How can students help the Refuge?
• Learn about habitats, endangered species and migratory birds, and teach others
• Never dump anything down storm drains and label storm drains with warnings
• Protect wildlife from pets by following regulations
• Teach others, including parents, about the Refuge
• Reduce, Reuse and Recycle • Write letters to legislators
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
Map of Nisqually National Wildlife Refuge
To print off a color version of this map, go to www.fws.gov/nisqually/education
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
Seasons of the Refuge
Nisqually National Wildlife Refuge means different things to different creatures. For some it’s a
place where they raise their young or a stopover during migration. For others, it’s a place to
spend the winter or a year-round home. Visit Nisqually at different times of the year to enjoy an
ever-changing panorama of wildlife. The darker the graphs, the more birds there are!
WATERFOWL
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
May
June
July
Aug
Sept
Oct
Nov
Dec
SHOREBIRDS
Jan
Feb
RAPTORS
Jan
Feb
SONGBIRDS
Jan
Feb
HERONS AND BITTERNS
Jan
Feb
Mar
Apr
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
Seasonal Scheduling
When are the best times to visit? What types of wildlife can be seen? Nisqually NWR is a good
place to visit at all times of the year. The wildlife you see will depend on the season.
Spring (March-May)
The refuge receives most of its visits by school groups during the late spring (May through
early June). Visits at this time of the year usually provide good weather. Migrating songbirds
move through the Refuge during the spring. Spring migrants include goldfinches, red-winged
blackbirds and swallows. Watch for nesting Canada geese, red-tailed hawks, great blue
herons, bald eagles and great horned owls.
Summer (June-August)
The best summer wildlife viewing is in the early morning or evening. Birds nesting on the
Refuge in the spring can also be seen during the summer.
Fall (September-November)
By scheduling field trips in the fall, educators will find fewer conflicts with other school groups
than they would experience in May and June. Although many songbirds leave the Refuge for
the winter, fall announces the arrival of Canada and cackling geese, many species of
waterfowl, and raptors.
Winter (December-February)
Winter field trips can be a wonderful experience for groups, allowing them to combine
environmental education activities with the opportunity to see large numbers of Canada geese
and a variety of ducks. Bald eagles are also more abundant during this time. Groups need to
be prepared for cold weather and/or rain during the winter.
Trail Distances and Times
Distances and approximate hiking times are from the visitor parking lot. Times indicated are for
steady walking. Add time to account for wildlife and habitat observation and activities.
Trail
Distance
Time Walking
Time with activities
Twin Barns Loop Trail
1 mile loop
30 minutes
1½ - 2 hours
To Riparian Forest Overlook
¼ mile one way
10 minutes
20 minutes
To Nisqually River Overlook
½ mile one way
20 minutes
30 minutes
To Twin Barns
½ mile one way
20 minutes
30 minutes
Nisqually Estuary Trail
2 miles round trip
1 hour
2 hours
Nisqually Estuary Boardwalk Trail
4 miles round trip
2 hours
3 hours
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
Hiking Trail Descriptions
The Refuge has approximately 5 miles of trails,
including a 1 mile loop trail. Trails provide views of a
variety of wildlife habitats. Please stay on the
observation decks and trails.
Twin Barns Loop Trail
This level, mile-long boardwalk passes through a
riparian forest, seasonal and freshwater wetlands, past
the Twin Barns and an observation platform. There are
three spur trails off the main trail, the Riparian Forest
Overlook, the Nisqually River Overlook, and the Twin
Barns Observation Platform.
To Riparian Forest Overlook
A short trail to an observation deck branches off the
east side of the Twin Barns Loop Trail. It curves through
a surge plain, where tidal changes cause the Nisqually
River to spill into a wooded habitat.
To Nisqually River Overlook
A little under ½ mile around the east side of the Twin
Barns Loop Trail, the boardwalk extends for another
150 yards to the river. Here there is an observation
deck with a mounted spotting scope for wildlife viewing
along the Nisqually River.
The Twin Barns Observation Platform
About ½ mile around the west side of the Twin Barns
Loop Trail, the boardwalk spur to the left goes to the
Twin Barns Observation Platform. This elevated
platform provides excellent views of the freshwater
wetlands and the tidal estuary outside the dike.
Mounted spotting scopes can assist with viewing
wildlife.
The Nisqually Estuary Trail and Boardwalk
This trail starts just prior to the Nisqually River Overlook
and is on top of an earthen dike. The salt water tidal
estuary is to the north of the trail and freshwater
wetlands are to the south. The first ½ mile is on top of
an earthen dike, the rest is a boardwalk. The trail is flat
and easy walking. NOTE: The last 700 feet of the
boardwalk is closed from early October through late
January during waterfowl hunting season.
Nisqually National Wildlife Refuge
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Educator’s Guide, Introduction
Habitats of the Refuge
Riparian Forest – Tidally Influenced
(Stop 1, Habitat Comparison Walk)
The Riparian Forest Overlook Spur off the Twin Barns Loop Trail winds through alder and
black cottonwood groves. The plants and animals of this forest must be able to survive tidal
influences on the Nisqually River. This forest is one of the rare, naturally-occurring, deciduous
riparian forests found in Western Washington. Drought or flooding, erosion or choking silt – all
are common and the habitat can change rapidly. Tidal changes in the river and sloughs bring a
twice daily wash of mixed salt and fresh waters, as well as rich life-giving organic matter called
detritus. In order to cope in this habitat, animals may move to higher ground or employ
evolutionary adaptations which allow them to swim in water; plants adapt in various way to
survive periodic flooding while retaining moisture when the waters recede.
Birds, Animals and Plants of the Riparian Forest
Birds
Great Horned Owl
Hooded Merganser
Wood Duck
Mallard
Swainson’s Thrush
Yellow-rumped Warbler
Woodpeckers
Animals
Beaver
Millipede
Mosquito
Red-legged Frog
Pacific Tree Frog
River Otter
Sow Bug
Satyr Anglewing
Rough Skinned Newt
Caterpillars
Plants
Black Cottonwood
Red Alder
Big Leaf Maple
Skunk Cabbage
Scouring Rush
Moss
Lady Fern
Licorice Fern
Stinging Nettle
Snowberry
Oregon Ash
Willow
Salmon Berry
Great Horned Owl
River Otter
Salmon Berry
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Educator’s Guide, Introduction
Habitats of the Refuge
Riparian Forest
(Stop 2, Habitat Comparison Walk)
Along the east side of the Twin Barns Loop Trail is a Riparian Forest that is not tidally
influenced because it is behind a dike. This area was once similar to the tidally-influenced
riparian forest, but was logged, diked and farmed. Second growth trees now form a forest that
includes native species such as red alder, black cottonwood and big leaf maple. Some snags
(dead, standing trees) still remain in the forest and provide nesting habitat for swallows and
forage for woodpeckers.
Many of the understory plants are a mix of nonnative plants like the Himalayan blackberry and
English ivy. This area is undergoing restoration work by Refuge managers, including cleaning,
contouring and replanting with more native plants.
Birds, Animals and Plants of the Woodland Habitat
Birds
Great Horned Owl
Hooded Merganser
Bufflehead
Black-Capped Chickadee
Peregrine Falcon
Swainson’s Thrush
Sparrows
Swallows
Woodpeckers
Downy Woodpecker
Nisqually National Wildlife Refuge
Animals
Black-tailed Deer
Red-legged Frog
Pacific Tree Frog
Mink
Long-tailed Weasel
Plants
Black Cottonwood
Red Alder
Big Leaf Maple
Himalayan Blackberry (non-native)
Stinging Nettle
Snowberry
Oregon Ash
Willow
Black-tailed Deer
13
Stinging Nettle
Educator’s Guide, Introduction
Habitats of the Refuge
River
(Stop 4, Habitat Comparison Walk)
The Nisqually River’s source is the Nisqually Glacier on Mount Rainier. The river gathers water
from other tributary streams and slows and widens as it reaches the delta. The delta has been
formed by the river carrying and dropping sediment as it slows to meet the Puget Sound. The
Nisqually River is a critical habitat for endangered and threatened salmon runs.
The River Overlook provides a great view of the river, including an area influenced by salt
water from the Puget Sound. During fishing season, Nisqually Tribal fishing floats are visible in
the water.
Birds
Common Mergansers
Double-crested Cormorant
Great Blue Heron
Belted Kingfisher
Mallard
Belted Kingfisher
Nisqually National Wildlife Refuge
Animals
River Otter
Harbor Seal
Beaver
Black-tailed Deer
Beaver
14
Fish
Chum Salmon
Chinook Salmon
Coho Salmon
Pink Salmon
Steelhead
Salmon
Educator’s Guide, Introduction
Habitats of the Refuge
Seasonal Freshwater Wetlands
(Stop 4, Habitat Comparison Walk)
Depending on the time of year, you may not think that habitats inside the dike are wetlands,
but not all wetlands are wet year-round! Seasonal freshwater wetlands like the ones around
the Twin Barns, fill with water in the fall and winter, and then gradually dry out over the spring.
The Refuge manages seasonal freshwater wetlands by pumping water into them in the fall.
With winter rainfall, these areas remain wet until the late spring when warm weather dries them
out. In the fall and winter these seasonal wetlands are a great place to watch waterfowl;
Northern shoveler, American wigeon, green-winged teal, gadwall, Northern pintail and Canada
geese feed here. Migrating shorebirds find food in the drying- out ponds as early spring
hatches of invertebrates provide birds with a boost of fat and protein they need to migrate. A
cacophony of calls signifies the beginning of the breeding season for the Pacific tree frog.
During the summer, songbirds nest in the wetlands vegetation.
Animals use the seasonal freshwater wetlands for hunting. In particular, red-tailed hawks,
great blue herons, and Northern harriers hunt for mice and voles. Vegetation around the edges
of the wetlands including meadow foxtail, tall fescue, and a mix of pasture grasses, provide
year-round shelter for sparrows, towhees, and juncos.
Birds
Red-tailed Hawk
Northern Harrier
Bald Eagle
Canada Goose
Mallard
American Wigeon
Animals
Deer Mice
Townsend’s Vole
Red-legged Frog
Pacific Tree Frog
Garter Snake
Mallard
Nisqually National Wildlife Refuge
Plants
Black Medic
Creeping Bentgrass
Reed Canarygrass
Velvet Grass
Canada Thistle
Townsend Vole
15
Nootka Rose
Educator’s Guide, Introduction
Habitats of the Refuge
Permanent Freshwater Wetlands
(Stop 5, Habitat Comparison Walk)
The permanent freshwater wetland around the Visitor Center and visitor parking lot was first
created in 1970 by manipulating the flow of water from artesian wells inside the Brown Farm
dike. The plants and animals in the permanent freshwater wetland are adapted to constant
contact with freshwater in the form of shallow and deep pools and ponds. Refuge staff
continues to restore this wetland by planting native species and removing invasive plants.
Over 75% of freshwater wetlands in the Puget Sound have been dredged, filled or diked. The
Refuge’s freshwater wetlands provide important habitat to replace that which has been lost
elsewhere.
Birds
Animals
Plants
Mallard
Mink
Cattail
Marsh Wren
Beaver
Reed Canarygrass
American Bittern
Black-tailed Deer
Duckweed
Wood Duck
Red-legged Frog
Pacific Willow
Ring-necked Duck
Pacific Tree Frog
Bittersweet Nightshade
Red-winged Blackbird
Bullfrog
Stinging Nettle
Hooded Merganser
Male and Female Wood Ducks
Nisqually National Wildlife Refuge
Red Elderberry
Tree Frog
16
Red Elderberry
Educator’s Guide, Introduction
Habitats of the Refuge
Coniferous Forest
Tall Douglas firs and big leaf maples grow on the western bluffs overlooking the delta. This
area used to contain an old growth forest which was logged many years ago. Bald Eagles use
the tall firs as lookouts. One pair nests here every spring.
The Estuary
Where the freshwater of the Nisqually River meets the salt water of the Puget Sound, a rich
habitat called an estuary is created. Estuaries provide rich nutrients and sediment for plants,
animals and invertebrates. Twice each day, the high tide floods the estuary with water and
twice each day the low tide drains the area of water. The Refuge has restored 762 acres of the
Nisqually estuary by removing dikes and introducing tidal waters after an absence of more
than 100 years. In the estuary there are several distinct habitat types that are described
below.
Salt Marsh, Sloughs, and Channels of the Estuary
The Nisqually estuary has both high and low salt marsh. Salt marshes are areas of slightly
higher elevation and covered with water only during high tides. The low salt marsh (lower
elevation) will be covered with water most of the time during high tides. The high salt marsh
(higher elevation) will only be covered during very higher tides.
Plants and animals that live in the salt marsh must adapt to handle salt water. Some examples
are the Puget Sound gumweed and pickleweed, which sweat out salt through evaporating
pores in their leaves. This process deposits a salt film or dusting on the leaves.
Sloughs and channels on the estuary provide habitat and food for salmon fry before they head
out to the Sound, as well as adults returning to spawn. These fish provide food for birds such
as great blue heron, hooded merganser and grebes.
Mudflats on the Estuary
The Nisqually River and McAllister Creek continually drop sediment on some 1,000 acres the
mudflats. This area is rich in invertebrates, including worms, clams and crustaceans (crabs).
One square yard of mudflats can contain 100 clams, 2,000 worms and 30,000 amphipods!
During spring and fall migrations shorebirds gather to feed on this wealth of invertebrates.
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Educator’s Guide, Introduction
Birds, Animals, Fish, and Plants of the Estuary
Birds
Grebes (various species)
Great Blue Heron
Common Merganser
Caspian Tern
Glaucous-winged Gull
Bufflehead
Animals/Fish
Clams
Crab
Amphipod
Salmon (see river species)
Steelhead
Lugworm
Plants
Puget Sound Gumweed
Lyndbys Sedge
Tufted Hairgrass
Pickleweed
Mudflat Birds, Animals and Plants
Birds
Western Sandpiper
Dunlin
American Wigeon
Greater Yellowlegs
Animals/Fish
Amphipod
Threadworm
Midge Larvae
Fly Larvae
Clam
Snail
Sculpin
Plants
Sea Lettuce
Phytoplankton
Western Sandpiper
Open Salt Water
The Nisqually NWR boundaries include the deep waters of the Nisqually Reach and Puget
Sound. Here, the marine environment takes over. Harbor seals hunt for flounder and
Dungeness crab. Scaup and surf scoters feed on clams, while American wigeon rest and feed
on sea lettuce (algae).
Birds, Animals and Plants of the Marine Habitat
Birds
Scaup
Surf Scoter
American Wigeon
Glaucous-winged Gull
Animals/Fish
Harbor Seal
Flounder
Clam
Dungeness Crab
Salmon
Steelhead
American Wigeon
Nisqually National Wildlife Refuge
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Plants
Sea Lettuce (Algae)
Phytoplankton
Phytoplankton
Educator’s Guide, Introduction
Birds of the Refuge
The following list, although not complete, describes some of the birds most commonly seen on
the Refuge. Drawings are not to scale. For a complete list see the enclosed Bird Checklist. The
checklist is also available online at http://www.fws.gov/nisqually
American Goldfinch (Carduelis tristis)
This is a bright-yellow bird with a black cap and wings. It is common in flocks
in weedy fields, bushes and roadsides, and in seed-bearing trees.
American Wigeon (Anas americana)
The wigeon is a surface feeding duck that eats mostly aquatic plants. In
flight, wigeons are mostly brown with a white wing patch. The males
have green and white on top of their heads.
Bald Eagle (Haliaeetus leucocephalus)
Adult bald eagles are readily identified by a white head and tail and huge
yellow bill. Immature bald eagles are mostly dark brown; it takes four or five
years for bald eagles to reach full adult plumage. It feeds mainly on fish.
The bald eagle was an endangered species, but thanks to intense recovery
programs populations are increasing.
Barn Swallow (Hirundo rustica)
This swallow has an iridescent blue back, with a cinnamon-colored belly
and throat. Most distinctive is its long, deeply forked tail. It makes open
cup-shaped mud nests. If it can’t find any mud, it makes its own by
walking in water and then soil. It eats insects while flying.
Belted Kingfisher (Ceryle alcyon)
The kingfisher dives from the air, head first into the water to catch fish with
its long beak. They nest in tunnels dug into the banks of rivers and lakes. It
is gray on its head and back with a gray band across its white breast. The
female also has a rusty colored band. Belted kingfishers can also be found
along the Nisqually River.
Canada Goose (Branta canadensis)
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