March 18, 1947, Bill Williams River Delta - Mojave-Yuma Cos., Havasu Lake, Parker Dam, Arizona, 0900-1600 MST. Clear and very warm. White Pelicans - 10 Double-crested Cormorants Treganza Blue Heron - several in marsh and on rocky slope overlooking the delta American Egrets - in deltas and on rocky slopes of canyon. Quite a contrast. Mallards - 3 pair. Gadwalls - paired up 24 or more. Baldpates - 8 Pintail 6 Green-winged Teal - 77 Cinnamon Teal - 9 Shoveller - 17 Lesser Scaup - 1 male in a small slough. American Merganser - 1 M in flight Turkey Vulture - 4 Sharp-shinned Hawk - 1 Zone-tailed Hawk - Buteo albonotatus - 1 seen. Not a foraging hawk, but seems to stay put in trees a great deal of the time. Average arrival date. Old nest in dead cottonwood at about 40'. Thin nest. Call or scream thin and whining whistle. Did quite a bit of soaring when we flushed it. Up to 500' high. The bill gleams at a distance. Nearly black. Tail bands show well. Could be confused with a vulture if you couldn't see the tail. Further notes by Gale M. in 1947-8. Duck Hawk - 1 soaring high off the towering buttes on the south side (Yuma Co.). Gambel's Quail - seemed to be small flocks at many points along the canyon. Gave one "Valley Quail call" and one of their own. Virginia Rail - 1 heard when a 410 shotgun was fired. Coots - 2 Killdeer - a few pair on the mud flats. Wilson Snipe - several singles and one group of 4 on mud flats and along small branches of the river. Spotted Sandpiper - 1 flushed with the Least Sandpipers. Least Sandpipers - 25 or more. Avocet - 2 - watched for a long while. Very clearly colored. Black-chinned Hummingbirds - several seen. 1 old nest found at 4 feet in thorny bush. May have been a Costa nest. These seem to be in heavier vegetation and more moist areas with tall mesquite in canyon while Costa is out in the drier open areas in plateaus and dry washes. A good problem to answer for no Costas were seen in the canyon. The Black-chinned feeds on many plants-chiefly the bud of the Creosote bush now. Kingfisher - 1 heard. Red-shafted Flicker - several heard and seen. Mearn's Gilced Flicker - a couple heard, but Gale Monson isn't sure. Gila Woodpecker - quite common in the canyon on the ground as well as in willow and Populus. Very noisy with a varied assortment of notes. Quite tame. Ladder-backed Woodpecker - 4 (2M and 2F). Quite bright crown on male. This bird has typical Dryobates habits, flight, and notes. Ash-throated Flycatcher - 2 or 3 different voice calls. Heard everywhere. 15- 20 were seen. They are quite tame, and one can approach within 8 or 10 feet. Black Phoebe - 5 seen. Feeding from limbs of fallen snags. 10 feet from us. Markings were clear. I did not see any perched very much above the ground. Say's Phoebe - several seen around the edge of the canyon, and along the canyon walls Vermilion Flycatcher - A rare treat to me! Every bit as beautiful as it is sup- possed to be! Darkish line from the bill separates the brilliant head crown color from only slightly duller red on the body. Black wings. Male along in the morning, but streaked female was seen in the afternoon (pinkish on the sides). Male gave call notes clearly. Fed from snag perches. Dropped to the muddy ground several times to feed. Remain less than a minute.