I've had similar experiences to Lars and Wayne. There are good numbers in the ash stands around the northern shores of Sturgeon Lake on Sauvie Island north of Oak Island. These stands are almost a monoculture of Oregon Ash with only the odd Oak scattered about. Certainly seen plenty in Oregon Oaks too of course.
On Tue, Oct 22, 2019, 2:13 PM larspernorgren <larspernorgren...> wrote:
> I agree with Wayne that very big Oregon Ash support robust populations of > this taxon. I first noticed on Cedar Canyon Road west of Banks. They also > frequent very large, old cottonwood such as Willow Bar on the Columbia > beach of Sauvie Island(at the county line, mp 7) and Sandy Delta. Also > Luckiamute Landing State Natural Area. The last three spots have Red-eyed > Vireo throughout the breeding season as well. The structure of the canopy > is probably the key, more than species. > Plenty of ash were planted at the Luckiamute restoration. But they > are already shaded out by more vigorous things like willow. I expect > Slender-billed Nuthatch are at Grand Island in Yamhill County where REVI > seem to be regular. Simple logistics mean public access to many potential > sites doesn't exist. Public roads avoid the floodplain, bridges over the > main Willamette are 15-20 miles apart. > > > > > Sent from my Verizon, Samsung Galaxy smartphone >