David Sibley recently shared his view of the use of recordings to attract birds. He asserted (among many other more important matters) that playback through powered speakers is largely unnecessary. I gave it a try this morning at Spring Valley and got two Virginia Rails and three Soras to respond to my unaided iPhone. Cheers, Bob -- Robert D Powell Congress Farm Research Institute Wilmington, OH, USA [log in to unmask] http://rdp1710.wordpress.com Nulla dies sine aves ______________________________________________________________________ Ohio-birds mailing list, a service of the Ohio Ornithological Society. Our thanks to Miami University for hosting this mailing list. Additional discussions can be found in our forums, at www.ohiobirds.org/forum/. You can join or leave the list, or change your options, at: http://listserv.muohio.edu/scripts/wa.exe?LIST=OHIO-BIRDS Send questions or comments about the list to: [log in to unmask]