Cerulean Warbler: Park in the lot by the dam (across from the bike path, right next to the lake). If you head north up the hill (face the bike path and head to the right up the road) there is a small area with picnic tables. The trees here are where the Ceruleans were flying around. If you are familiar with their song it makes them easier to find as they are always singing when I’ve been there.

Northern Parulas: Take the bike path from same parking lot and continue until you reach the second bridge. (This is a fairly good walk but since you follow the creek most of the way, it is really birdy). Past that bridge is where the Parulas were singing. They have an upward trilly song that makes them easier to find. I’ve also heard them at other places along the bike path, but this is where we had excellent views.

Hope that helps and good luck finding them!