Robin, I have about a dozen November and December reports for Black-throated Green Warbler in Maryland and DC listed. The previous late record for Howard County was 11-11-92. The only ones later tnah Nov. 22 are two Christmas Count records. Though a BTG at this time is extraordinary it does happen occasionally. Last Saturday at Conowingo with Rick Blom I saw a Blue-gray Gnatcatcher. We're not sure where these birds are coming from, but there is always a trickle of tardy migrants. Bob Ringler