Female MacGillivray's Warbler, stop-over during migration

Yesterday I spotted this female McGillivray's Warbler in the vegetation adjacent to the Arkansas River along the Canon City Riverwalk. Today I found a female MacGillivray's Warbler in the same location so I expect it is the same bird that is making a stop-over to fuel up on insects before continuing her migration.

Yesterday she was alone but today she was actively feeding with several other warblers including the Northern Waterthrush in a post above. SeEtta