Robin, You should look in the Peterson Warbler Guide for your "streaky warbler". The illustrations are much more accurate, especially the fall plumages. There are numerous plumages illustrated for the Orange-crowned, as there are different sub-species. The written accounts are also very good. I find the illustrations in most of the major field guides, for the warblers at least, to be at best very mis-leading, and at worst down right wrong (for the "confusing fall warblers). All the Tennessees I saw over the weekend still resembled sping adults; mostly white below with grayish-blue caps, not at all like the fall plumaged pictures in the NGS guide. Based on your description, it sounds like an Orange-crowned.The behavior sounds right too. Rick Sussman Ashton,MD Warblerick@aol.com