F.R. Vance, J.R. Jowsey, J.S. McLean and F.A Switzer (Original published by Western Producer Prairie Books in 1977; later updates simultaneously published in Canada and the U.S. in 1984
This field guide was recommended by a nature interpreter at Grasslands National Park in June 2011 as the definitive short reference, and I’m grateful for that. Great index, good pictures, both close-up and distance. It is the most comprehensive of the easy-to-read, colour illustrated books that I’ve found.
Out of print