My son is a very mellow, level-headed, non-risking seven-year-old. We were working this weekend on some scouting projects to finish getting him to the next level. One elective was to feed the birds. I used some birdseed, old bagels, and crisco to make a feeder. While spreading the seeds on the lard-covered bagels, he asked if birdseed was poisonous. Of course not, son. We are, after all, feeding it to the birds.
"No doctor. I have no idea where he would have gotten this strange fungus." Ha! Ha!
BTW--do not search for tongue fungus thru a search engine . . . even if looking for a funny picture for your corny blog. I'm now nauseated! Again . . . where was my head!