April 7, 1947, Cor vallis, Oregon State College Campus Rain showers. Robin female setting on completed nest in fork of elm tree near the poultry building, at a height of 15 feet. SE exposure, with a higher canopy of oak branches, to the north, south, and west. 4 p.m. Yellow Warblers - seem to be singing everywhere on the campus this a.m. from 830 on. They have arrived. Green-backed Goldfinches - pulling dry grass stems near the Admin. building and carrying to about 35 feet in a tall P. fir, on the west side. 10 a.m. April 8, 1947, 12-mile Swamp 150 - 345 p.m. Dave Marshall, Tom McCallister and Fred Evenden. Hi Brkn, Low Sctd, Ocsnl RW-, SW6 with gusts. Pied Bill Grebe - saw one dive just before we left. about 60 feet from the road. It reappeared with only the bill and top of head showing, sub- merged and swam some 150 feet just below the surface, and we could follow it by the ripple created by it. Then it rose with only the pate out! Canada Geese, approximately 2000 to 2500 were in one or two flocks at the south end of the swamp and an adjoining field. Most were Lessers with some Commons with them. Mallards - about 25 or 30 pairs scattered over the swamp. They seem to be mated up but we saw no sign of any having a nest at this time. Baldpates - just 2 were seen, 1 a M for sure. Pintails - perhaps 200 or more on the area, with a ratio of 5 to 1 this time. (M). Gadwalls - we saw one pair of them Green-winged Teal - a couple of flocks of 150-200 each were seen. may Cinnamon Teal - one male was seen for sure, and McCallister believes he/have seen another one as well. We all had satisfactory chances to study it. Shovellers - 2-300 were present, the ratio being about 3M to 1F. Wood Ducks - at least 2 pair were at the north end, close to the ash groves. Turkey Vulture - circled over the area. Virginia Rail - one heard on the east side of the swamp, and I later flushed one from a clump of Carex obnupta at the north end, near the fence. I had only a glimpse of this quite wary bird. Coots - saw 6 or 7 just before we left. Wilson Snipe - 3 flushed from field north of the swamp. Greater Yellow-legs - a flock of 6 lit next to the Cinnamon Teal at the north end, and later on McCallister flushed a flock of 54 from the flooded field to the north of the swamp. Some landed in fairly deep water and gave the appearance of swimming, altho this must be doubtful. Violet-green Swallows, Tree Swallows and Cliff Swallows were all present in such huge numbers over the swamp and adjacent area this afternoon that it would be difficult for me to estimate the numbers, for they were feeding close to the water, as well as several 100 feet above the ground. I'd roughly guess at least 500 were seen, consisting of 3 parts V-g's to 2 parts Cliffs and 1 part Tree Swallows. Rough-winged Swallow - just one for sure, was seen just before we left the swamp at 5 p.m. It was with trees and V-g's and flying close to the bridges. Raven - one flew over the north end, chased by a Redwing. Tule Wrens - appeared to be more abundant, and I found a recently constructed nest in Carex obnupta at about 8" above the water, and 15" above the ground, when the water recedes. It was made of last years plant stems, and was pretty nearly soaking wet. Entrance on underside. Pacific Yellowthroat - very definitely the first for me this year in Oregon, altho I did see them in Arizona several weeks ago. Heard it singing from a scrub- ash and spirea fence row along the road by the swamp at 150 p.m. NW Redwings - many, apparently paired up now. Saw one female Redwing ??? that had a very prominent line over the eye, as well as having the throat, chin, and upper breast a clear yellow. Reddish on the wings, a wing-bar present, too. Found only one nest in short clump of Carex obnupta on the edge of a "thicket" of it. Freshly completed, and very wet. Savannah Sparrows in fields and fence rows Song Sparrow M sang within 5' of me.