Stephen J. Taft
William E. Stout
Timothy G. Driscoll
David L. Evans
Michael A. Bozek
Robert N. Rosenfield
2009
<p><span>Trichomoniasis is a digestive tract disease caused by ingestion of the protozoan </span><i>Trichomonas gallinae</i><span>. This disease can be a significant source of mortality. No deaths of nestlings could be attributed to trichomoniasis in Cooper's Hawks (</span><i>Accipiter cooperii</i><span>) breeding in urban and rural environs in Wisconsin, North Dakota, and British Columbia. We detected </span><i>T. gallinae</i><span> in four (5.2%) of 77 nestling Cooper's Hawks during 2006 and 2007 among 42 urban nests on new study areas in southeast Wisconsin and eastern North Dakota/western Minnesota. All four infected young fledged. We did not detect </span><i>T. gallinae</i><span> in 52 breeding adult Cooper's Hawks on two urban study sites, nor in 28 migrant hatching year (</span><i>n</i><span> = 24) and adult (</span><i>n</i><span> = 4) Cooper's Hawks at Hawk Ridge Nature Reserve, Duluth, Minnesota in 2006–2007. Overall, we detected </span><i>T. gallinae</i><span> in only 2.5% of 157 Cooper's Hawks in northcentral North America. These results suggest a low prevalence of </span><i>T. gallinae</i><span> in Cooper's Hawks in the northern part of this hawk's breeding range.</span></p>
application/pdf
10.1676/08-148.1
en
Wilson Ornithological Society
Low prevalence of <i>Trichomonas gallinae</i> in urban and migratory Cooper's Hawks in northcentral North America
article