The Nature Conservancy's first purchase in Oregon in 1963 speaks to the unique nature of this rocky plateau in West Linn, Oregon.  The site's namesake, the common camas lily, blooms here abundantly for a few weeks each spring, and if you are lucky - the peak bloom will coincide with the arrival of a large variety of breeding songbirds.  

The headline from my visit this morning was [18] Warbling Vireo, many of which appeared to be pairing up on territory. 

Bewick's Wren was the next most abundant species with 13 detections most of which were auditory - but thankfully I had a few show up for photos:

A few good looks at Black-throated Gray, Nashville, and Wilson's Warbler:

I am thinking - Western Wood-pewee: