Organized by the East Cascades Audubon Society, the Dean Hale Woodpecker Festival sees 11 species of woodpeckers and over 200 species of birds in total every year. Led by experienced birders, the festival is timed to see young woodpeckers leaving their nests. For full information and details, go to www.ecaudubon.org.
As long as you are in the Sisters and Bend area, explore the myriad diverse birding sites there. I find the Bend and Sisters area a rich birding location and have had happy birding experiences at Shevlin County Park and Hatfield Lake, for examples. Google other possibilities using the keywords “birding Deschutes County Oregon.” You will be amazed at the number of birdy places in this part of central Oregon.