There's actually 5 shows in Washington.
March 14 - Washington Feather Fanciers, Monroe, WA
March 28 - Springtime's Hatching Show, Kennewick, WA
October (3rd weekend) - Pacific Northwest Poultry Association Show, Ridgefield, WA
October ? - Columbia River Poultry Exhibitors, Stevenson, WA
Nov ? - Washington Feather Fanciers, Chehalis, WA
There is also a show in June in Albany, OR at the Mother Earth News Fair, and my understanding is the people that put on the Oregon Poultry Swaps are going to be attempting to hold a show at their Fall Swap this year first weekend of October. Which rounds out the OR and WA shows.