March 26, 1948, Oak Ridge, 2 miles NW of Corvallis, S slope - 1400-1615 -Ovc/ The first warm day we've had! Vulture - circling over the ridge Redtail Hawks - a pair circling over the ridge above me, crying at short intervals. They kept this up all the time I was clambering over the ridge, and finally they came closer as I went down an open slope, one of the birds setting its wings, and swooping in from at least 1/2-mile away, but pulled out and hovered about 50 feet above me, screaming all the time. I suspected a nearby nest, but couldn't spot one, so sat down and waited, watching the two hawks "talk to each other" with a set of notes (barking-like) entirely new to me, as they made partial contact, but they eventually circled way up and went over the ridge, and then I happened to look below me, and there was the nest. In a clump of ash and cottonwoods on a flat ledge at the very base of this steep open slope was the nest, about 45-50' up in a Cottonwood (about 22" DBH). As I was above the nest I could see something white, but it was so far away I couldn't tell if it was a downy young, or eggs. I will check later with more powerful glasses. The parents were not in the area all the rest of the time I was there. Valley Quail in thicket of rose and willow on open pasture slope - creek thru it. Pheasants - flushed several from the top of a ridge, under a clump of oaks. One cock crowed from an oak slope later in the afternoon. Flickers - feeding on boggy ground in the open flats below the hill. Pileated Woodpecker workings common in the cottonwood-ash swamp area, particularly in the very rotten snags. Work observed a few feet and 35 feet above ground. photo taken. Winter workings, for they were reasonably fresh. NW Red-breasted Sapsucker - working the ash and maple Crows - calling from the fields below the hill, and a few flew over, in westerly direct Slender-billed Nuthatch - usual calls, together with spring song. Robins - a few in the oaks, and on open pasture slopes Varied Thrush - one in the swamp brush on the ledge of the south hill slope W. Bluebirds - a few calling and perched in tops of oaks Ruby-crowned Kinglet - in maple thicket in swampy area under cottonwoods and oaks Audubon Warblers - scattered singles and pairs working the oaks, call notes and songs. Meadowlarks - singing from the ground, posts, and oak trees Purple Finches - 4 or 5 of them perched silently in top of an oak at 2 p.m. Juncos - many working the brushy slopes, and I observed one courtingpair in a clump of oak near the Fox den. New songs and notes were heard, and each time the one (male?) would approach, the female would utter another set of notes, and hop or fly away. They eventually parted, while I watched. No contact made. Song Sparrows - a couple in sedge clumps on marshy area. March 26, 1948, Corvallis W. Evening Grosbeaks - flocks in maples and elms on the campus this a.m. Calling Rufous Hummingbird - heard the first one of the year, just like last year, in my own back yard. I looked out, and it was hovering over the Oregon Grape March 27, 1948, Oak Ridge 2 mi. NW of Corvallis, 1400-1615 , Brkn,thin/ warm, calm 5 Vultures circling together, and 2 Redtails circling above them dive-bombed them as they approached the vicinity of the Redtail nest sight. Redtail Hawks - the two chased off the vultures, and soon a third Redtail joined them & they circled and sailed around, but no conflicts ensued - they all moved west over the ridge, and we climbed the hill above the nest, but even with 32X magnification we could detect no eggs, or young. Inasmuch as courting activities were observed yesterday, perhaps nesting has not begun for this pair. Valley Quail in willow-rose bush thicket by a small creek Pheasants - several crowed just as a blasting explosion occured. Killdeer - a few Flicker Red-breasted Sapsucker working the alder W. Crows - 15 or 20 seen - not together - feeding infield Oregon Chickadees - in willow and alder-ash area Robins - a few feeding on the soggy ground W. Bluebirds - calling and flying over, and perched in tops of oak Audubon Warblers - calling and singing Meadowlarks singing a lot Evening Grosbeaks - a couple flew over, calling Oregon Juncos - a few.