Bald Eagles in Wisconsin, Winter 2002-2003

<x-flowed>[Moderator's Note: Between Apr 28-May 4, 2003, there was discussion
on this listserv re: means by which WNV overwinters in cold climates.
Subject lines included "Host Preference of Culex pipiens," "Infected
Crow near Toronto Suggests WNV Overwintered in Canada," "WNV
Recrudescence in Birds, Early Season Mosquitoes
  in Canada," and "Infected Crow Near Toronto, WNV Transmission."
The first of the following notes is in response to a May 2, 2003
posting from Louise Shimmel (reprinted below as # [2]).]

[1]
From: Julie Langenberg, VMD, by way of Emi K Saito" <esaito@usgs.gov>
Date: Jun3 10, 2003

Subject: WNV in wintering Wisconsin bald eagles?

In early May, a posting to this listserve indicated that during this
past winter WNV activity was detected in Wisconsin bald eagles.
Based on our state WNV bird database and discussions with the
laboratories in our state
known to be doing WNV testing on birds, there is no definitive
evidence of eagles in WI having been infected with WNV in winter
2002-3. Based on tissue PCR results in our state database, there was
1 WNV positive dead
bald eagle collected from Oconto County in October 2002.

Julie Langenberg, VMD
Wildlife Veterinarian
Wisconsin Department of Natural Resources
101 S. Webster St. Box 7921
Madison, WI 53707-7921
608-266-3143
608-267-7857 fax

[2]
From: "Louise Shimmel" <raptors@raptor-center.org>
Date: May 2, 2003

A rehabilitator in WI had a great horned owl recovering from WNV
relapse and die in January. I can put anyone interested in contact
with her as to what testing was used, if of interest. I believe she
also had two WNV positive bald eagles also come in in mid-winter,
when temperatures were substantially below freezing.
Louise

Louise A Shimmel, Director
Cascades Raptor Center
32275 Fox Hollow Rd - PO Box 5386
Eugene OR 97405
541/485-1320; fax 541/485-4586
raptors@raptor-center.org; www.raptor-center.org

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