Flock of Tundra Swans heard in flight over Lilydale/Mendota Heights late this morning, headed south; followed minutes later by a few Trumpeters that took off from Pickerel Lake. Sight and sounds of the many passerine migrators along the river bike trail have grown increasingly scarce since last week, with a few individual exceptions, supplanted by winter arrivals. Normally there's a good concentration of bird activity around the several springs west of the Pool and Yacht Club, but a massive rock slide last night totally covered the trail in an area parallel to the east end of Pike Island. This end of the trail will likely be closed for some time. East of the Pool and Yacht Club, there's a project in progress to replace some power poles in the wetland. The temporary infrastructure laid down to support heavy equipment and materials gives some birding access to the wetland between work sessions. It might be a good place to check for migrating waterfowl in coming weeks. Linda Whyte
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