It's fascinating that the birds know to come to Tanner's Spring. It's really nothing more than a mud puddle. I suspect they like it because of the overhead protection of many branches. If a hawk shows up in the neighborhood one good blue jay yell and everything vanishes into the bushes. Yesterday was marvelous.... black-throated blue warbler, one-second brown thrasher, a feather-collecting sparrow, the sweet female towhee and the stronger color male towhee, but my biggest thrill was the blue headed vireo, a first for me (maybe a one-time shot for me). It appeared, sipped for a while, looked at me while I grinned at it. I bird expert taught me what I had just seen.