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February 2002, Vol. 30, No. 1 Birding in Northfield Mark Taylor The Rise and Decline of House Finches in Massachusetts Thomas R. Hamilton Unexpected Centers of Winter Landbird Density During the 101st CBC S. S. Mitra First Documented Nesting of White-winged Crossbill (Loxia leucoptera) in Massachusetts: The Invasion of the Cone Slashers Geoffrey S. LeBaron The Dynamics of Black-capped Chickadees at Bird Feeders Herb Wilson Sibley Birding: How Much Does Your Big Day Weigh? Or, Birding With a Calculator Bob Bushnell and Steve Davis Pocket Places The Grove at Salisbury Douglas Chickering About Books: Who Are Those Guys? A Conversation with Josep del Hoyo, the Creator of the Handbook of the Birds of the World Series Mark Lynch Bird Sightings: September/October 2001 About the Cover: Boreal Chickadee William E. Davis, Jr. About the Cover Artist: Paul Donahue At a Glance Wayne R. Petersen ^ top