Migratory Birds of the High Desert

Laurel Parshall

fact

What defines Oregon’s high desert?

What defines Oregon’s high desert?

Bounded by the Cascade Mountains to the west and the Blue Mountains to the north, Oregon’s high desert covers approximately 24,000 square miles. Annual rainfall in the high desert varies from 5 to 14 inches. The average elevation is 4,000 feet; at 9,733 feet, the summit of Steens Mountain is the highest point in Oregon’s high desert. The terrain of the high desert was mostly formed by a series of lava flows that occurred between 30 and 10 million years ago.

Sources: The Oregon Encyclopedia; Wikipedia  

voices

Helen Harbin, ONDA Board Member

Helen Harbin, ONDA Board Member

“I connect with Oregon’s high desert through my feet, my eyes, my sense of smell, and all the things I hear. Getting out there is a whole body experience.” Supporting ONDA, Helen says, not only connects her with wild landscapes, but is also a good investment. “I felt like if I gave them $20, they might squeeze $23 out of it.”

fact

Badger

Badger

Badgers are generally nocturnal, but, in remote areas with no human encroachment, they are routinely observed foraging during the day. They prefer open areas with grasslands, which can include parklands, farms, and treeless areas with crumbly soil and a supply of rodent prey.

Badgers are born blind, furred, and helpless. Their eyes open at four to six weeks.

Latin name: Taxidea taxus

White-faced Ibis

White-faced Ibis

Wading in shallow waters, the white-faced ibis (Plegadis chihi) probes its long, scythe-shaped beak into the soft mud for shellfish, mollusks, and grubby earthworms. Though their faces have a sliver of white around the beak and eyes, their plumage varies with a plum neck, and bronze and jade wings. In summer, they fly back to breed in the high-desert wetlands like Malheur Lake and Paulina Marsh.

Their conservation status is low concern, but seasonal stresses like drought and river damming can scare white-faced ibises from their marsh and estuary niches.

Sage Sparrow in sagebrush

Sagebrush Sparrow

Year after year, sagebrush sparrows (Artemisiospiza nevadensis) return to their roots to their breeding ground after spending winter in New Mexico, Texas and Arizona. These sparrows cover the largest territory of any other sparrow species, from the basalt-raised steppe of the Columbia Plateau to the southeastern stretches of Oregon’s arid Basin and Range. Their song, piercing and fine-tuned, carries across the windy meadows pocked with sagebrush. Yet the dangers of wildfires aggravated by invasive grasses like cheatgrass, however, threaten their summer home.

Yellow Warbler

Named for its brilliant plumage and song, the yellow warbler (Dendroica petechia) breeds in riparian habitats of Oregon each year after traveling from winter homes as far south as Brazil and Peru. Beginning in late April or early May, they can be found among the native plant species that thrive along the waterways of the high desert. Although they are bright yellow, these skillful singers can often be heard before they're seen!

Once very common throughout the state, threats to habitat — particularly livestock grazing and invasive species that diminish the diversity of plant life these birds rely on — have led to large declines in population. Riparian restoration plans provide hope for increasing the available breeding grounds for these members of the warbler family.

Flammulated Owl

On a summer night, you might hear the deep double-hoots of a flammulated owl (Otus flammeolus) somewhere off in a thicket of ponderosa pines and grand firs. Their calls might seem so far off that you have to pause mid-step to hear them, but don’t be fooled; they’re closer than you think! These tiny owls — smaller than a fist, weighing a scant tenth of a pound — adjust the volume of their calls when they sense humans close by. Their woody plumage camouflages them against pine and fir bark, lending the average birder an additional degree of difficulty to spot them. One of fourteen other species of Oregon owl, the flammulated owls return to roost in forests spanning from the West Cascades to the Blue Mountains after wintering in the American southwest.

Western Snowy Plover

Western snowy plovers (Charadrius alexandrinus nivosus) can be found on the Oregon Coast year-round, roosting in any of the eight beach nesting areas. However, you can also find them in the salt pans and alkaline flats of Nearshore in summer months, pecking at small shellfish in the shallows. These tiny beach-nesters require sandy shorelines for laying up to three eggs per nest.

These birds face a number of threats ranging from predators to invasive species like European grass. Human interference — namely negligent hikers, dirt bikes, and unleashed dogs — trample plover nests, making the recovery of this species increasingly difficult. The Oregon Conservation Strategy lists the western snowy plover as threatened, yet conservation measures have been taken to remove the invasive grass and limit human activity in western snowy plover nesting areas.

About the author

Scott Donohue is the author of How to Build a Fire, a book that outlines ways to build fires responsibly in cabins, campgrounds and survival situations. He has blogged for YellowStonePark.com and worked in the editorial department for Sierra, where he had the chance to interview Alex Honnold and report on breaking news concerning conservation and climate change.

 

Photos: White-faced Ibis- Craig Miller. Sagebrush Sparrow- Laurel Parshall. Yellow Warbler- Daniel Sherman. Flammulated Owl- Jerry Oldenettel. Snowy Plover- B. Casler/USFWS.