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Over 60 biologists have gained advanced degrees by way of Delta Research and the following Universities have sent graduate students to carry out their original researches at the Station: Bishop's, Bristol, Cornell, Duke, Michigan State, Purdue, Alberta, British Columbia, California, Guelph, Illinois, Manitoba, Michigan, Min­ nesota, Missouri, Oklahoma, Wisconsin, Utah and Yale."

. Vegetation, water and weather play important parts in wildfowl life. Bulrushes and reeds thrive when the water level is high, and the nesting diving ducks, that like this habitat, thrive also. In 1967, there was a steady lowering and Dr. Hochbaum said, "by the end of September, emergent vegetation was stranded by wide mud bars that were still dry and crusty at freeze-up."

When temperatures have dropped during the nesting season, early-nesting Mallards and Pintails have been known to abandon frozen eggs. When this happens, they remain together in flocks where open water remains.

The start of nesting in Canvasback and Redhead usually occurs during the last week in April. However, in 1967, the first eggs were not being laid until May 11 tho "Despite this delay, nesting unac­ countably ended about ten days earlier than normal and was the shortest breeding season in 30 years! The shortened nesting period was followed by an early build-up of adult moulters at Delta," said Dr. Hochbaum.

Some of the latest developments at the Delta Waterfowl Re­ search Station are as follows: A new Hatchery Laboratory to make space for the more sophisticated embryological studies, and to ac­ commodate greater research demand for hand-reared ducklings; (in cooperation with Controlled Environments Ltd., of Winnipeg, there are incubators and freezing compartments in which eggs may be incubated or held under precisely controlled temperature, humidity and light); a new winter pen for the wild Mallard breeding flock (this is covered so that the birds may be held free-winged); Peter Ward devised a pond for the pen tha t keeps water open in the coldest weather; two new observation towers commanding views of the Station pond; a new drawing table (presented to the Station by Mr. W. H. Lang of Minneapolis); and a new residence for the Director (an eight-room two-storey bungalow-type dwelling over­ looking Cadham Bay).

We have mentioned only Mallards, Pintails, Canvasbacks and Redheads thus far, as most of the interesting experiments seem to concern them. However, many enlightening observations of wild

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