Date: Wed, 10 Dec 2003 20:25:19 EST Reply-To: Maryland Birds & Birding Sender: Maryland Birds & Birding From: Steve Huy Subject: Re: Hummingbird Migration Routes MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit What the map shows is first sightings. Therefore it should be accurate; the number of first sightings should progress easterly due to travel time. It is not a map of wintering population density. steve In a message dated 12/10/03 19:37:01 Eastern Standard Time, mozurk@BELLATLANTIC.NET writes: > While I agree these maps are interesting and while I won't argue > against this interpretation, I don't see evidence for it in these > maps. As presented. The time resolution is too crude. We can easily > argue that the increase of reports in Oct and Nov compared to > September is due to cold weather forcing the birds into the sheltered > areas where we look for them. Or to the fact that fewer hummingbirds > go unidentified late in the season; a poor look at a hummer in > September will often be passed off as a Ruby. The same poor look in > early November would result in you or me standing in that spot for > hours awaiting a better view. > Steve H. Middletown, MD ======================================================================= To leave the MDOsprey list, send e-mail to listserv@home.ease.lsoft.com with the following message in line 1: signoff mdosprey ======================================================================= =========================================================================