The Great Horned Owl on nest in the Carter Fields Conservation Area in West Boxford appears to be sitting a bit higher.  This suggests that she may have hatched her egg or eggs and we need to await the appearance of the first owlet in the days ahead!  Great Blue Herons have returned to this rookery, but in much smaller numbers than any in any recent years.  Looks like many of the nests were blown down over the winter.  Stay tuned!