Capillaria-like eggs and worms in beaks of red tailed hawks

Rebecca A Cole rebecca_cole at
Fri Jan 21 16:14:31 EST 2005

We are seeing increasing numbers of red tailed hawks with deformed beaks.
On histopathology we see segments and eggs of Capillaria-like worms in the
(rhampo theca) of the beak.
Has anyone seen this before?
Do not find this in the literature so far
Many thanks
Please respond to bionet and to my email

Rebecca A. Cole, Ph.D.
USGS, BRD National Wildlife Health Ctr
6006 Schroeder Road
Madison, WI 53711
Ph. 608-270-2468
Fx 608-270-2415
Rebecca_Cole at

"Chance favors the prepared mind"  L.Pasteur

"We make a living by what we get, but we make a life by what we give"
W. Churchill


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