On Sunday 1 November, at Centennial Lake, a group of Howard County Birders observed unusual behavior by 2 blue herons. The herons were on the lake within about 50 feet of each other. Several flocks of canada geese flew over the lake, the herons looked up at the geese, with one heron lifting one wing and the other heron lifting first one and then both wings while moving around in circles. They kept this up for 4 or 5 minutes until the geese finished the over flight. None of the geese landed. Has anyone seen this type of behavior before? We hypothesized that the herons were trying to look threatening to keep the geese away which must have worked.. Jeff Friedhoffer