Date: Mon, 29 Jan 2001 11:47:51 EST Reply-To: Maryland Birds & Birding Sender: Maryland Birds & Birding From: Paul O'Brien Subject: Re: Raptor Visual Capability MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Georgia, Your account of raptors viewing urine-stained trails in the ultraviolet is accurate. There was a paper a couple of years ago I believe in Science, but I don't have a reference. As I recall, the raptor was a Kestrel and the urine was somewhat fluorescent in the UV, enabling the Kestrel to focus its efforts on the areas most frequented by the rodents. Neat strategy! Paul O'Brien Rockville, Mont. Co., MD pobrien776@aol.com ======================================================================= To leave the MDOsprey list, send e-mail to listserv@home.ease.lsoft.com with the following message in line 1: signoff mdosprey ======================================================================= =========================================================================