OBSERVATIONS ON THE DISPERSION OF INCLUSIONS BODIES OF INSECT VIRUS BY BIRDS IN FOREST
Abstract: In this paper, 109 species of birds belonging to 31 families and 436 samples were detected, pH of all birds alimentary tracts were 5.0—7.0. The feces of birds remained infective in bioassay and PIB of virus could be detected in birds feces within 6 hr. after feeding. In natural forest, Number of birds with PIB was nearly 1％.