Plague-like proportions of bats are the latest animal problem to hit the Tindal RAAF base in Katherine. Roving numbers of wallabies at the base have seen aircraft stop landing there at night. Now large bat numbers are damaging trees there, Wing Commander Rohan Gaskill says. But he has told the ABC's Country Hour the bats are not interfering with flights. "Although they do fly towards the air field in the evening and around dawn and dusk, it is not really causing major problems," he said. "Our flying is normally day flying or night flying and the bats are cleared away at those times." *ABC