Kathryn J. Schneider brings her book “Birding the Hudson Valley” to the Chatham Bookstore on Saturday, December 8. Published by University Press of New England in October, the book is a guide to birds and birdwatching in the Hudson Valley. Book signing at 4 p.m. as part of Chatham Winterfest. Conversation with Thomas Chulak from the bookstore and Q & A follow a brief reading at 5 p.m. Free. Refreshments. Portion of proceeds donated to Columbia Land Conservancy. Live at the Chatham Bookstore,