You’re the yellow bird that I’ve been waiting for!
Interesting Fact: Their open, cuplike nests are easy to find, and cowbirds often lay eggs in them. Yellow Warblers in some areas thwart these parasites by building a new floor over the cowbird eggs and laying a new clutch of their own. In one case, persistent cowbirds returned five times to lay more eggs in one nest, and an even more persistent warbler built six layers of nest floors to cover up the cowbird eggs. ( http://www.audubon.org/field-guide/bird/yellow-warbler )