These two are from week-end visit to Nonquon Sewage Lagoon. There were many warblers present at the entrance to the lagoon when I arrived there early in the morning. These two I am having difficulty with.
1. Magnolia Warbler?
2&3: Tennessee or Orange-crowned? The little dark area on crown in the second picture has put some doubt in my mind though both seem to have white undertail feathers indicative of a Tennessee.