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The song of this bird is one of the characteristic sounds of spring evenings in much of the high desert country of eastern Oregon. This temperate migrant is a ground-nesting, ground-foraging bird of most of the grassland, agricultural land, and shrubs steppe habitats of Oregon. The streaked brownish plumage of the Vesper sparrow is similar to that of several small to medium-sized sparrows, except for white outer tail feathers, shown most conspicuously in flight. The Oregon vesper sparrow is an Oregon Conservation Strategy Species in the Klamath Mountains and Willamette Valley ecoregions. Hear the song of the Vesper sparrow Photo…

The adult Lark sparrow is one of the most easily recognized passerines. The head pattern is sharp and crisp, with a chestnut crown and cheek patch surrounded by alternating white and black stripes. White underparts with a a small black central spot and a long, blackish tail with conspicuous white wing corners further aid identification. Courtship behaviors, including turkey-like strutting by males, differ markedly from that of other passerines. In Oregon, the Lark sparrow is a locally common summer resident and migrant east of the Cascades. Hear the song of the Lark sparrow Photo by Beken Bulgic Schneider, Flickr

This uncommon inhabitant of Oregon's high desert can be a challenge to find unless the observer becomes familiar with its territorial song and preferred habitat. Habitat requirements are specialized and population distribution and densities are highly variable from year to year in Oregon. The Black-throated sparrow occurs along boulder-strewn, sparsely vegetated slopes of arid deserts. They prefer warm dry sunny slopes of desert basins. Hear the song of the Black-throated sparrow Photo by Ashley Tubbs, Flickr

Although common within its range, this handsome sparrow can easily be overlooked. The gray head, black malar stripe, white eyebrow, and prominent black spot set in the middle of a white breast identify the bird. It is widespread throughout the extensive shrub-steppe of central and eastern Oregon. The principal breeding range of Sagebursh sparrow is southeast and central Oregon. It is found throughout the arid expanses of the Great Basin and usually associated with big sage. Although considered by some authors to be a sagebrush obligate, Sagebrush sparrows have been found in other plant communities exclusive of sagebrush. Hear the…

The buzzy, insect-like song of the Savannah sparrow is a characteristic sound of open landscapes dominated by grasslands throughout Oregon. Savannah sparrows are usually heard or seen when perched atop a fence post, small shrub, or tall weed, or running on the ground between openings in vegetation until the bird abruptly drops down into cover. The Savannah sparrow nests on the ground, often in a slight depression and well concealed by a canopy of dead vegetation or partially tucked under a clump of vegetation. Hear the song of the Savannah sparrow Photo by Dave Budeau, ODFW

The Grasshopper sparrow is one of the more enigmatic and erratic birds in Oregon. A small population may appear in an area, persist for a few years, and then disappear, only to return at some later time. It is difficult to detect, because of both its quiet, insect-like song and its reclusive habits. Males sing from elevated perches, such as flower stalks or fence posts before diving back among the grasses. It occurs in scattered "colonies" along the unforested northern slopes of the Blue Mountains. The Grasshopper sparrow is an Oregon Conservation Strategy Species in the Columbia Plateau, Klamath Mountains…

Although not brilliantly plumaged, the conspicuous Song Sparrow is one of the more regularly seen birds in Oregon. Defensive and curious, when approached it readily announces its presence with loud chips and often excitedly rises to a conspicuous perch to confront the interloper. The Song sparrow is well named as both male and female have a variety of songs that may be heard at any time of year, and juvenile birds begin to sing full songs within two months of hatching. The Song sparrow is a common and widespread resident of western Oregon. Hear the song of the Song sparrow…

This small tan-and-gray sparrow with a delicately streaked upper breast is found in summer in wet mountain meadows where its bubbly song can be heard from low shrubs. It winters in brushy lowland areas where it skulks in tall grass and weeds and is usually seen for only a moment. It breeds locally above 3,000 feet in the west Cascades and winters in the valleys west of the cascades. Hear the song of the Lincoln's sparrow Photo by Kelly Colgan-Azar, Flickr

The Swamp sparrow uses wet areas that have thick vegetation for cover. Several glimpses of this reclusive bird may be required before it can safely be separated from Lincoln's sparrow or the more common Song sparrow, though its distinctive call will give it away to observers familiar with it. Chestnut coloration on the wing coverts helps separate this species from other wintering sparrows. The Swamp swallow is a rare to uncommon spring and fall transient and winter visitant in western Oregon, especially along the coast. Hear the song of the Swamp sparrow Photo from USFWS

Flocks of these big, brown, plain sparrows are a common sight in winter in western Oregon. By early spring their faded head markings become a beautiful gold, black and white, and their plaintive descending songs become frequently heard from almost any large brush pile. They are an abundant migrant in western Oregon, less common farther east, and abundant in winter throughout the Willamette Valley. Hear the song of the Golden-crowned sparrow Photo by Dave Budeau, ODFW

Adult tiger salamanders are relatively large with olive-colored blotches outlined in black. They have gray undersides and can grow to 13 inches in total length. As adults, tiger salamanders live almost entirely on land, returning to the water to breed. Terrestrial adults spend a lot of time in burrows that they or other animals have dug. Tiger salamanders are found in grassland and shrub-steppe habitats. It is unknown whether tiger salamanders occurs naturally in Oregon, or whether they were introduced by people after larval salamanders used for bait colonized fishing lakes and ponds. Photo by Matt Reinbold, Flickr

These large-bodied salamanders have solid brown skin that is smooth and moist. Adults can grow to almost 10 inches in total length. Northwestern salamanders live in moist forests or partly wooded areas. Though common in Oregon, adult salamanders are rarely seen because they live underground. Terrestrial adults require moist crevices in logs or rodent burrows in the ground for shelter from weather and predators.

The Botta's pocket gopher tends to be dark rusty-ocherous on the dorsum and light buffy-ocherous on the venter; the nose is dusky and the feet and chin are white. This pocket gopher is territorial; only during the breeding season can more than one individual be found in the same burrow system. Burrow systems do not cross each other, but spacing within and between burrow systems is remarkably uniform. In Oregon, this gopher occurs as disjunct populations: one in Curry County only, the other in southwestern Klamath County, southern Jackson County, and western Josephine County, with an extension through central Douglas…

The camas pocket gopher is the largest member of the genus, although large size is not a distinctive feature of the species. This gopher is a dark, sooty brown on the dorsum; the ears and nose are blackish. The venter is lead colored except for an irregular and variable-shaped patch of white on the throat. The winter pelage is long and furry; the summer pelage is short and coarse. The camas pocket gopher is one of the most vicious animals known for its size. Nevertheless, these pocket gophers flee from potential predators whenever the opportunity arises. This pocket gopher produces…

The Western pocket gopher is one of the two small pocket gophers in Oregon. Depending on the region, the pelage of this gopher ranges from pure black with purplish and greenish overtones to brown to hazel to yellowish hazel on the dorsom and from lead colored to buff to ocherous on the venter. The face is lead colored to black. The Western pocket gopher constructs burrows beneath the surface with a vertical tunnel connecting deeper burrows that include the nest. This gopher occurs from the Columbia River to the California-Oregon border in the Coast Range and along the coast. It…

The Northern pocket gopher is the other small pocket gopher in Oregon. Its dorsal pelage ranges from a rich brown to a yellowish brown or buffy gray; the venter is lighter and usually washed with buff. This gopher builds extensive burrow systems which consist of both near-surface and deep runways connected by a vertical shaft. The nest cavity is commonly situated in the deep runway with blind tunnels radiating from near the nest that are used for food storage and as a latrine. The Northern pocket gopher occurs throughout Oregon east of the Cascade Range.

This group of rodents includes mice, voles, rats and muskrats of various sizes, but they all share one trait - their dentition is highly specialized for gnawing.

The Little pocket mouse is one of the smallest rodents in North America and certainly the smallest in Oregon. The dorsal pelage is pinkish buff to ocherous buff with overlying blackish hairs; the venter is buff. The tail is bicolored. In Oregon, this mouse occurs in Harney and Malheur counties. They exhibit their greatest activity from spring through autumn and spend a large portion of their lives in burrows below the surface of the ground. In winter, they remain underground continuously, relying on stored seeds for energy. When active on the surface, a large portion of their time is spent…

The Great Basin pocket mouse is the largest member of the genus in Oregon. The dorsal pelage of this mouse is pinkish buff or ocherous buff overlain with black hairs; the venter is white to buffy. A lateral line, usually somewhat olive colored, separates the dorsal and ventral pelages. The tail is distinctly bicolored. In Oregon, it occurs thought east of the Cascade Range, except it does not occur in the Wallowa and Blue mountains. The Great Basin pocket mouse constructs burrows below the surface that contain granaries for storage of food, a nest cavity, and several entrances. They spend…

The California kangaroo rat is the largest kangaroo rat in Oregon, but is only of moderate size within the genus. It has a moderately broad face, relatively large ears, and awl-shaped lower incisors. The tail is 150 percent of the length of the head and body. It is the darkest-colored kangaroo rat in Oregon. The pelage of the dorsum is composed of hairs with dark-gray bases, a narrow dark-buff band and black terminus. The venter, feet, upper lip,; and base, sides, and tip of tail are white and there is a white spot above each eye and behind each ear…