Trumpeter Swans were sharing open Lake Minnetonka water with the thousands of Common Mergansers (and a few Bald Eagles) on one of the lake's last pieces of open water. Three swans on the water were joined by seven others one day, an arrival greeting with loud trumpeting and posturing that resembled courtship. Both sets of these very social birds began calling with the arrivals were a couple of hundred yards away. Some of the fly-ins landed in an erect posture, to be greeted with similar display by swans on the scene. The trumpeting continued for a minute or so, then settled into a murmur that gently faded. Swans can be seen during serious winter weather on the Mississippi River near Monticello.