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The spatial distribution pattern and driving forces of microbial biodiversity are the key concems in microecology. From the perspective which the associated microorganisms might be spread by bird migration, may provide some insights to better understand the mechanism. In this study, 379 samples of bird faeces and cotton swabs from beak, claw, wings, tails were collected from wild bird in Dali, Yunnan. The nematode-trapping fungi (NTF) which carried by different bird species and the potential dispersal pathways were analyzed. The results showed that nine strains in four species, one genus(Atthrobotrys) of NTF were isolated only in claws of birds, and the detection rate was 8. 7%. 01 all different migration status, the detection rate was 3. 6% in the migrating process, the detection rate at wintering or breeding sites was 15. 0%, and the detection rate for resident birds was 12. 5%. Among numerous ecological groups, the detection rate of forest birds that were mainly active in the trees and shrubs was 0, but those were active on the ground was 18. 2 % ; while the detection rate for swimming birds and wading birds was 10. 7% and 11. 1 % respectively. The results suggested that birds can carry NTF by toes and claws, and their habitat selection affect their ability to carry NTF; in addition to that, the widespread species are more capable of carrying and spreading NTF. The effects of birds on the carrying and spreading of rnicroorganisms, as well as the spatial pattern of microbial diversity need to be included in future research. [ABSTRACT FROM AUTHOR]