Molting Time

Almost ready for finding some Shorebirds but I want to squeeze every bit out of the Neo-Tropic species I can get before the southward flight .
Every July the family and I travel to central Connecticut for a big Birthday Bash so in between the Food and setting up and breaking down I hit a local area Wolcott Park were there are a few species I can Digiscope.
What was noticed was the Molting has started in the few species I have observed in the extreme was this Warbling Vireo.

When I first seen this guy I was thinking Red Start? The facial feather ragged look was confusing.

Scarlet Tanager I think have a few weeks before that feature takes affect yet I can see some Olive Yellow creeping in the belly area.