Percival, H. Franklin

Notes On Reproductive Success Of Pen-Reared Bobwhite Quail Equipped With Radio-telemetric Transmitters

Ten pairs of pen-reared bobwhite quail (Colinus virginianus virginianus L.) were studied in an effort to determine the mechanical effect of radio-telemetric transmitters on fertilization. Five pairs of quail were equipped with transmitters weighing approximately 24 grams and measuring approximately 2 x 2 x 3.7 centimeters. The remaining 5 pairs without transmitters were maintained under similar conditions. Records were maintained on production, fertility, and hatchability. Such data recorded at two-week intervals throughout the laying season showed that the radio-telemetric transmitters...

Some Ecological Conditions Under Which Selected Waterfowl Food Plants Grow In South Carolina

Nine waterfowl food plants were selected from food habit studies conducted on waterfowl wintering in South Carolina coastal areas. These plants (Aneilema keisak, Brasenia schreberi, Eleocharis equisetoides, Eleocharis quadrangulata, Polygonum arifolium, Polygonum hydropiperoides, Ruppia maritima, Scirpus robustus, and Scirpus validus) were studied in relation to certain chemical and physical properties of soil and water collected from sites producing stands of these plants. It was found that soil nutrition, salinity, and water level are in primary control of the plant growth and...