It wasn't until later in the morning that the birders found the Pine Grosbeaks being somewhat quiet, feeding on the Spruces and in an open shrub patch feeding on Winterberries (Ilex verticillata). They demonstrated their species name, enucleator, by enucleating the seed centers from berries.
Enucleating! (Following three photos by Shawn Billerman)
So I ended up not yet seeing White-winged Crossbill, but we finished the day by finding a reported flock of Common Redpolls on the way home, totaling near 60 and feasting heavily on Birch seeds - one of their preferred foods and a good way to search for them.