Shortt dedicated his life to painting Prairie birds, wildlife and landscapes. Immigrating to Canada from Ireland in 1911, Shortt grew up in the Winnipeg area. His career was spent working for a variety of natural history and conservation organizations, including over 30 years with Ducks Unlimited Canada. During the span of his career Shortt produced thousands of paintings that can now be found in collections throughout Canada and the United States and in countries such as Japan, South Africa, Sweden, Ireland, England, and Australia.