As one of the oldest birders on this Board, I too have high frequency hearing loss and thought all the warblers had disappeared. I bought a Songfinder. It worked fine but the lower frequencies made me learn the songs all over again and I eventually sold it to another birder. Now I have hearing aids when I bird and can hear everything again. This past weekend at Scofieldtown in Stamford I heard a Yellow Warbler, Common Yellowthroat and Hooded Warbler, something I was unable to do before. I have no trouble with Robins, Cardinals, Carolina Wrens and many others but the Warblers are only heard when the hearing aids go in. Paul Plotnick Stamford