Hi Jeff,
The Unity CBC also had many high counts of common species. It seemed that most of these like chickadee, creeper, House Sparrow, doves, Downy Woodpecker, crows and jays were just artifacts due to the record number of participants that participated this year. However there did seem to be some high counts that truly reflected high population levels in species like titmouse, Carolina Wren and both nuthatch. This also seemed true for the Red-tailed Hawk and saw-whet owl record tallies which apparently resulted from burgeoning local small rodent populations, apparently due to the huge acorn crop over the last two years.
Good birding,
tom