1) An outbreak of avian pox in a captive flock of mourning doves involving 12 of 23 birds is described. Typical nodular growths on the eyelids and head as well as yellowish lesions at the base of the tongue and at the back of the pharynx were seen. Typical intracytoplasmic inclusion bodies were demonstrated. Methods are described for differentiating this infection from trichomoniasis. An attempt to transmit the disease to pigeons, with material from a natural case, failed.
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No consistent effect of plant diversity on productivity