Have you checked craigslist.org? There's usually a bunch for sale on there. Pheasants too. You might not want to mention the dog training part though with some of the sellers 
search dog training and there is a guy in Monroe, one in Enumclaw and one in Gig Harbor who always seem to have birds of some sort for sale. I've bought birds from people who have them listed. I always feel guilty making up some story about why I'm buying them.....
one time I bought some pheasant from a girl telling her i wanted them just for fun. She told me about how she raised them from chicks, loved and cared for them....
Felt guilty about it so, I always send an email, Do you have pigeons available for dog training. most reply politely that they appreciate my honesty and would rather they not be used for that....
Anyways- I'll be putting in an order for about 30-50 early Oct. depending on what the guy has. Secret source- can't let it out. Birds are a little tough to find.
Shannon- you've been quiet this year....no trapping or, just selling all to Brooky?