<b>Hal Opperman</b> is the principal author of <i>A Birder’s Guide to Washington</i>; co-author of <i>Birds of Southwestern British Columbia</i>, <i>Birds of the Puget Sound Region</i>, and <i>Birds of the Willamette Valley Region</i>; and past editor of the Washington Ornithological Society’s journal, <i>Washington Birds</i>.