Arapaho National Wildlife Refuge
Encyclopedia
The Arapaho National Wildlife Refuge is a United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
National Wildlife Refuge
National Wildlife Refuge
National Wildlife Refuge is a designation for certain protected areas of the United States managed by the United States Fish and Wildlife Service. The National Wildlife Refuge System is the world's premiere system of public lands and waters set aside to conserve America's fish, wildlife and plants...
located in north central Colorado
Colorado
Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...
. The refuge is located in North Park
North Park (Colorado basin)
North Park is a high, sparsely populated basin in the Rocky Mountains in north central Colorado in the United States. It encompasses a wide valley in Jackson County rimmed by mountain ranges at the headwaters of the North Platte River and several smaller tributaries, including the Michigan River,...
in central Jackson County
Jackson County, Colorado
Jackson County is the fourth-least densely populated of the Colorado 64 counties of the U.S. state of Colorado. The county population was 1,577 at the 2000 Census. The county seat and the only municipality in the county is the Town of Walden.- History :...
south of the town of Walden
Walden, Colorado
The Town of Walden is a Statutory Town that is the county seat of, and the only incorporated municipality in, Jackson County, Colorado, United States. It is situated in the center of a large open valley called North Park. People from Walden and the surrounding area refer to themselves as "North...
. The refuge was established in 1967 to furnish waterfowl with a suitable place to nest and rear their young. It was created in part to offset losses of nest
Nest
A nest is a place of refuge to hold an animal's eggs or provide a place to live or raise offspring. They are usually made of some organic material such as twigs, grass, and leaves; or may simply be a depression in the ground, or a hole in a tree, rock or building...
ing habitat in the prairie
Prairie
Prairies are considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and grasses, herbs, and shrubs, rather than trees, as the dominant vegetation type...
wetland
Wetland
A wetland is an area of land whose soil is saturated with water either permanently or seasonally. Wetlands are categorised by their characteristic vegetation, which is adapted to these unique soil conditions....
region of the Midwest. It is located in the valley of the Illinois River
Illinois River (Colorado)
Illinois River is a tributary of the Michigan River, approximately long, in Jackson County in north central Colorado. It drains part of the North Park basin south of Walden....
, a tributary of the North Platte River
North Platte River
The North Platte River is a major tributary of the Platte River and is approximately long counting its many curves, It travels about distance. Its course lies in the U.S...
. It is administered by the United States Fish and Wildlife Service
United States Fish and Wildlife Service
The United States Fish and Wildlife Service is a federal government agency within the United States Department of the Interior dedicated to the management of fish, wildlife, and natural habitats...
.
Description
Irrigation
Irrigation may be defined as the science of artificial application of water to the land or soil. It is used to assist in the growing of agricultural crops, maintenance of landscapes, and revegetation of disturbed soils in dry areas and during periods of inadequate rainfall...
wetland
Wetland
A wetland is an area of land whose soil is saturated with water either permanently or seasonally. Wetlands are categorised by their characteristic vegetation, which is adapted to these unique soil conditions....
meadows and fill water fowl brood ponds. Periodic burning, irrigation and various grazing systems are management tools are used on the refuge meadows to maintain vegetative vigor for nesting purposes. Manipulation of water levels in the shallow ponds is intended to assure adequate aquatic vegetation for food and escape cover. The ponds also produce many insect
Insect
Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...
s and other invertebrate
Invertebrate
An invertebrate is an animal without a backbone. The group includes 97% of all animal species – all animals except those in the chordate subphylum Vertebrata .Invertebrates form a paraphyletic group...
s (protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...
) needed by most female waterfowl for successful egg
Egg (biology)
An egg is an organic vessel in which an embryo first begins to develop. In most birds, reptiles, insects, molluscs, fish, and monotremes, an egg is the zygote, resulting from fertilization of the ovum, which is expelled from the body and permitted to develop outside the body until the developing...
laying. These insects also serve as an essential food item for the growth of duck
Duck
Duck is the common name for a large number of species in the Anatidae family of birds, which also includes swans and geese. The ducks are divided among several subfamilies in the Anatidae family; they do not represent a monophyletic group but a form taxon, since swans and geese are not considered...
lings and goslings
Goose
The word goose is the English name for a group of waterfowl, belonging to the family Anatidae. This family also includes swans, most of which are larger than true geese, and ducks, which are smaller....
during the summer months.
The first waterfowl arrive at the refuge in the spring when the ice vanishes in April. The peak migration
Bird migration
Bird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...
occurs in late May when 5,000 or more ducks may be present. Canada geese
Canada Goose
The Canada Goose is a wild goose belonging to the genus Branta, which is native to arctic and temperate regions of North America, having a black head and neck, white patches on the face, and a brownish-gray body....
have been reestablished in North Park and begin nesting on the refuge during April. Duck nesting usually starts in early June and peaks in late June. The refuge produces about 9,000 ducklings and 150 to 200 goslings each year. The Fish and Wildlife Service expects that when refuge lands are fully acquired and developed, waterfowl production should increase significantly.
Primary upland nesting species include the mallard
Mallard
The Mallard , or Wild Duck , is a dabbling duck which breeds throughout the temperate and subtropical Americas, Europe, Asia, and North Africa, and has been introduced to New Zealand and Australia....
, pintail
Northern Pintail
The Pintail or Northern Pintail is a widely occurring duck which breeds in the northern areas of Europe, Asia and North America. It is strongly migratory and winters south of its breeding range to the equator...
, gadwall
Gadwall
The Gadwall is a common and widespread duck of the family Anatidae.- Description :The Gadwall is 46–56 cm long with a 78–90 cm wingspan. The male is slightly larger than the female, weighing on average 990 g against her 850 g...
, and American wigeon
American Wigeon
The American Wigeon, also American Widgeon or Baldpate, is a species of wigeon in the dabbling duck genus Anas. If this is split up, all wigeons will go into their old genus Mareca again...
. A number of diving ducks, including the lesser scaup
Lesser Scaup
The Lesser Scaup is a small North American diving duck that migrates south as far as Central America in winter. It is colloquially known as the Little Bluebill or Broadbill because of its distinctive blue bill...
and redhead
Redhead (duck)
The Redhead is a medium-sized diving duck, 37 cm long with an 84 cm wingspan.The adult male has a blue bill, a red head and neck, a black breast, yellow eyes and a grey back. The adult female has a brown head and body and a darker bluish bill with a black tip.The breeding habitat is...
, nest on the larger ponds and adjacent wet meadows. Most species may be observed during the entire summer season. Fall migration reaches its height in late September or early October when up to 8,000 waterfowl may be on the refuge.
Refuge wetlands also attract numerous marsh, shore, and water birds. Sora
Sora (crake)
The Sora is a small waterbird of the family Rallidae, sometimes also referred to as the Sora Rail or Sora Crake.Adults Soras are long, with dark-marked brown upperparts, a blue-grey face and underparts, and black and white barring on the flanks. They have a short thick yellow bill, with black...
and Virginia rail
Virginia Rail
The Virginia Rail, Rallus limicola, is a small waterbird, of the family Rallidae.Adults are mainly brown, darker on the back and crown, with orange-brown legs. They have long toes, a short tail and a long slim reddish bill...
s - shy, secretive birds - are numerous but seldom seen. If they are present, Wilson's phalarope
Wilson's Phalarope
The Wilson's Phalarope, Phalaropus tricolor, is a small wader. This bird, the largest of the phalaropes, breeds in the prairies of North America in western Canada and the western United States. It is migratory, wintering around the central Andes in South America. They are passage migrants through...
, American avocet
American Avocet
The American Avocet is a large wader in the avocet and stilt family, Recurvirostridae.This avocet has long, thin, gray legs, giving it its colloquial name, "blue shanks". The plumage is black and white on the back with white on the underbelly. The neck and head are cinnamon colored in the summer...
, willet
Willet
The Willet, Tringa semipalmata , is a large shorebird in the sandpiper family. It is a good-sized and stout scolopacid, the largest of the shanks...
, sandpipers, Greater yellowlegs
Greater Yellowlegs
The Greater Yellowlegs, Tringa melanoleuca, is a large North American shorebird, similar in appearance to the smaller Lesser Yellowlegs. Its closest relative, however, is the Greenshank, which together with the Spotted Redshank form a close-knit group...
, and dowitcher
Dowitcher
The three dowitchers are medium-sized long-billed wading birds. They resemble godwits in body and bill shape, and the reddish underparts in summer, but are much shorter legged, more like snipe to which they are also somewhat closer related...
s will be easy to observe. Other less common species include great blue heron
Great Blue Heron
The Great Blue Heron is a large wading bird in the heron family Ardeidae, common near the shores of open water and in wetlands over most of North and Central America as well as the West Indies and the Galápagos Islands. It is a rare vagrant to Europe, with records from Spain, the Azores and England...
, black-crowned night heron
Black-crowned Night Heron
The Black-crowned Night Heron commonly abbreviated to just Night Heron in Eurasia, is a medium-sized heron found throughout a large part of the world, except in the coldest regions and Australasia .-Description:Adults are...
, American bittern
American Bittern
The American Bittern is a wading bird of the heron family Ardeidae. New evidence has led the American Ornithologists' Union to move the heron family into the order Pelecaniformes .-Description:...
, and eared and pied-billed grebe
Grebe
A grebe is a member of the Podicipediformes order, a widely distributed order of freshwater diving birds, some of which visit the sea when migrating and in winter...
.
The upland hills harbor sage grouse
Sage Grouse
The Sage Grouse is the largest grouse in North America, where it is known as the Greater Sage-Grouse. Its range is sagebrush country in the western United States and southern Alberta and Saskatchewan, Canada. A population of smaller birds, known in the U.S. as Gunnison Sage-Grouse, were recently...
year around with a winter population of more than 200 birds. Golden eagle
Golden Eagle
The Golden Eagle is one of the best known birds of prey in the Northern Hemisphere. Like all eagles, it belongs to the family Accipitridae. Once widespread across the Holarctic, it has disappeared from many of the more heavily populated areas...
s, several species of hawk
Hawk
The term hawk can be used in several ways:* In strict usage in Australia and Africa, to mean any of the species in the subfamily Accipitrinae, which comprises the genera Accipiter, Micronisus, Melierax, Urotriorchis and Megatriorchis. The large and widespread Accipiter genus includes goshawks,...
s, and an occasional prairie falcon
Prairie Falcon
The Prairie Falcon is a medium-sized falcon of western North America.It is about the size of a Peregrine Falcon or a crow, with an average length of 40 cm , wingspan of 1 metre , and weight of 720 g...
circle the skies above the refuge in search of food. Their prey includes Richardson's ground squirrel
Richardson's Ground Squirrel
Richardson's ground squirrel , or the flickertail, is a North American ground squirrel in the genus Urocitellus...
, white-tailed prairie dog
White-tailed Prairie Dog
The white-tailed prairie dog is found in western Wyoming and western Colorado with small areas in eastern Utah and southern Montana. The largest populations are in Wyoming where they are known colloquially as "chiselers". This prairie dog species lives between 5,000 and 10,000 feet, generally a...
, and white-tailed jackrabbit
White-tailed Jackrabbit
The White-tailed Jackrabbit , also known as the Prairie Hare and the White Jack, is a hare found in western North America. Briefly reputed to have been extirpated , it is now clear from observations, roadkilled specimens and historical records that white-tailed jackrabbits are still extant in...
.
Badger
American Badger
The American badger is a North American badger, somewhat similar in appearance to the European badger. It is found in the western and central United States, northern Mexico and central Canada, as well as in certain areas of southwestern British Columbia.Their habitat is typified by open...
, muskrat
Muskrat
The muskrat , the only species in genus Ondatra, is a medium-sized semi-aquatic rodent native to North America, and introduced in parts of Europe, Asia, and South America. The muskrat is found in wetlands and is a very successful animal over a wide range of climates and habitats...
, beaver
American Beaver
The North American Beaver is the only species of beaver in the Americas, native to North America and introduced to South America. In the United States and Canada, where no other species of beaver occurs, it is usually simply referred to as "beaver"...
, coyote
Coyote
The coyote , also known as the American jackal or the prairie wolf, is a species of canine found throughout North and Central America, ranging from Panama in the south, north through Mexico, the United States and Canada...
, and pronghorn antelope are commonly observed. It is also possible to see a red fox
Red Fox
The red fox is the largest of the true foxes, as well as being the most geographically spread member of the Carnivora, being distributed across the entire northern hemisphere from the Arctic Circle to North Africa, Central America, and the steppes of Asia...
, mink
American Mink
The American mink is a semi-aquatic species of Mustelid native to North America, though human intervention has expanded its range to many parts of Europe and South America. Because of this, it is classed as Least Concern by the IUCN. Since the extinction of the sea mink, the American mink is the...
, long-tailed weasel
Long-tailed Weasel
The long-tailed weasel , also known as the bridled weasel or big stoat is a species of mustelid distributed from southern Canada throughout all the United States and Mexico, southward through all of Central America and into northern South America.-Evolution:The long-tailed weasel is the product of...
, or porcupine
Porcupine
Porcupines are rodents with a coat of sharp spines, or quills, that defend or camouflage them from predators. They are indigenous to the Americas, southern Asia, and Africa. Porcupines are the third largest of the rodents, behind the capybara and the beaver. Most porcupines are about long, with...
. As many as 400 mule deer
Mule Deer
The mule deer is a deer indigenous to western North America. The Mule Deer gets its name from its large mule-like ears. There are believed to be several subspecies, including the black-tailed deer...
have wintered here and up to 200 elk
Red Deer
The red deer is one of the largest deer species. Depending on taxonomy, the red deer inhabits most of Europe, the Caucasus Mountains region, Asia Minor, parts of western Asia, and central Asia. It also inhabits the Atlas Mountains region between Morocco and Tunisia in northwestern Africa, being...
are frequently seen during the winter months. Moose
Moose
The moose or Eurasian elk is the largest extant species in the deer family. Moose are distinguished by the palmate antlers of the males; other members of the family have antlers with a dendritic configuration...
have recently been reintroduced into North Park and may occasionally be observed in the willow
Willow
Willows, sallows, and osiers form the genus Salix, around 400 species of deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions of the Northern Hemisphere...
thickets along the Illinois River bottoms. There are no poisonous snake
Snake
Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...
s in the refuge.
Public access
Public access to the refuge includes a self-guided 6-mile wildlife auto tour route from nearby State Highway 14Colorado State Highway 14
State Highway 14 in the U.S. state of Colorado is an east–west state highway approximately long. One of the longest state highways in Colorado, it traverses four counties along the northern edge of the state, spanning a geography from the continental divide in the Rocky Mountains to the...
, and overlook over the Illinois River valley. Public fishing is permitted along the Illinois River except in the areas marked as closed. Portions of the refuge are open to public hunting of some game species during appropriate state seasons. The refuge is open for day-use only. Fires are not permitted on refuge lands.
An 1850 foot ADA compliant boardwalk was completed in August 2009 by Wildlands Restoration Volunteers. The volunteers built it over 5 years, with more than 6,000 man hours of labor. It winds along parts of the river where numerous animals and birds can be seen. Moose can often be seen among the willows. The boardwalk is about a mile southwest of the refuge headquarters.