The pair were designed by Edwin Lutyens, sculpted by William Reid Dick, and appeared in 1936. The goose hasn't been subdued yet!
William Reid Dick was born in Glasgow, so it's appropriate that a version of this sculpture is now in the Kelvingrove Art Gallery. At the time he undertook the commission, Dick was president of the Royal Society of British Sculptors, trustee of the Tate Gallery, and a Royal Academician. He had been knighted the previous year, and would go on to become Sculptor in Ordinary for Scotland. As well as his public sculpture, he was renowned for his portrait work, some of which is now in the National Portrait Gallery collection.