Hello Ron, Bioacusticians A large number of bird species especially hummingbirds have very high frequencies, reaching up to 17-19 kHz. Other examples which I studied are some finches in the genus Haplospiza and Acanthidops whose higher frequencies are almost 13 kHz. If you want a copy of this paper let me know
Saludos CS César Sánchez M. Escuela de Biología Universidad de Costa Rica Ciudad Universitaria San José. Costa Rica. e-mail: [EMAIL PROTECTED] ----- Original Message ---- From: Allen T. Chartier <[EMAIL PROTECTED]> To: [email protected] Sent: Saturday, March 22, 2008 7:49:01 AM Subject: Re: Songbird audiograms A review of sonograms published on the website www.xeno-canto.org for brush-finches (Atlapets sp.) reveals many species with songs and calls in the range of 8-11 kHz. http://www.xeno-canto.org/browse.php?query=Brush-Finch&pagenumber=&order=taxonomy&view=3 Allen T. Chartier [EMAIL PROTECTED] Inkster, Michigan, USA ----------------------------------------------------------------------------- Website: www.amazilia.net HummerNet: www.amazilia.net/MIHummerNet Blog: http://mihummingbirdguy.blogspot.com ----------------------------------------------------------------------------- Every day, the hummingbird eats its own weight in food. You may wonder how it weighs the food. It doesn't. It just eats another hummingbird. -- Steven Wright ========================================= ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, March 19, 2008 9:23 PM Subject: Songbird audiograms > Thank you Dr. or Mr. Stoker for pointing out Bob Dooling's extensive > research (much of which is on budgerigars, to be sure) and other important > points. The literature on this topic is not thin or hard to find. > I would like to add that there are species of nearctic/neotropical > Dendroica warblers whose songs extend above 6 and even above 9 or 10 kHz, > as can be readily seen in the classic Robbins et al. guide published by > Golden Books. These are different species from those in question, of > course, but they certainly are songbirds. The target listeners are > probably conspecifics. > Ron Larkin > > ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping
