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Article
James Harrison ; Jeffery Harrison 1963Kent Bird Report 1963, 12
Article
Hugh Boyd ; Jeffery Harrison 1962Wildfowl, 13(13)Recoveries of young Mallard in their first season are used to compare the dispersal of hand-reared and of wild ducks in Britain. The only important difference is in the proportion of birds moving away from the point of release: hand-reared birds[...]
Article
James Harrison ; Jeffery Harrison ; Peter Olney 1962Wildfowl, 13(13)Discussion of two gravel pits used as a local wildfowl reserve in the Darenth Valley, near Sevenoaks, which are surrounded by grazing land and water meadows, with some small peat bogs and boggy woods.
