Here are a couple of links, one for a book on Sask birds the other a list, with the list you can look up the birds on line to see pictures of them.
I made my own manual for Manitoba, copied descriptions, habitat, range maps, and pictures from different sources, pasted them all into Microsoft Word and printed it. Organized the manual by family. Works well, I think it is better for me than some of the books I've seen for sale.
Book:
http://www.virtualsk.com/current_issue/sk_birds.html
List:
http://www.naturesask.ca/?s=education&p=fieldchecklistofskbirds
I haven't seen a Bittern as yet, still hoping to make it to whitewater Lake.
Just had an Indigo Bunting visit our feeder, first time I've seen one.