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

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