Infectious bursal disease virus, chicken
A chicken demonstrating severe listlessness, ruffled feathers, and a crouched stance 4 days after infection with IBDV.
Courtesy of Dr. Julia R. Blakey.
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A chicken demonstrating severe listlessness, ruffled feathers, and a crouched stance 4 days after infection with IBDV.
Courtesy of Dr. Julia R. Blakey.