Industrial and agricultural pollution and toxic contamination, dams that block fish migration and access to spawning habitat—the decline of salmon, steelhead, sturgeon, and lamprey in the Columbia River is has many causes. To restore the river and the life that depends upon it, the Yakama Nation Fisheries is employing many and varied strategies, simultaneously. In some areas, habitat recovery is the key; in others, supplementation of salmon runs may need to be the driver.
Woodpeckers are considered keystone species because of their broad effects on other species.
The White-headed Woodpecker (Dryobates albolarvatus) is uncommon and non-migratory throughout its geographic range in Washington, where it inhabits forests dominated by ponderosa pine (Pinus ponderosa).
The White-headed Woodpecker (Dryobates albolarvatus) is a primary excavator that occurs in pine- (Pinus spp.) dominated habitats throughout its geographic distribution.
Evaluating rates of nestling provisioning by adult birds provides insight into foraging strategies and reproductive effort. In most biparental avian species, both males and females provision the young, although this task is not always shared equal
The Gray Flycatcher (Empidonax wrightii) was found to only occur as a breeding species in WA in the 1970s. Since then, no detailed information existed on habitats used by Gray Flycatchers for breeding. To address this information gap, w
In Washington, the White-headed Woodpecker (Dryobates albolarvatus) is listed as a species of concern because of its association with old-growth ponderosa pine (Pinus ponderosa) forests. In 2011, we began a color-marking study of
Below you will find research articles on White-headed Woodpecker ecology/biology that we have co-authored with other researchers who started the research through other institutions. We are grateful to have been able to work with them and we hope
This page is intended to provide restricted access to Intergovernmental Master Agreement 56662 ("IG-MA 56662") and associated modifications for contractors and consultants doing business with the Confederated Tribes and Bands of the Yakama Nation.
What We Know About Upper Yakima Bull Trout Populations: Isolated populations of bull trout living in the Upper Yakima Basin face significant challenges such as blocks to adult migration, degraded instream habitats, and inva