There was a lot of hype over people eating apricot pits back in... oh, the 70s, I think. I'm pretty sure they didn't really cure cancer, but at the same time, I don't think they really had enough cyanide to do more than curl your lip unless you ate a heckuva lot of them. I really doubt it'll hurt the gosling.
I’m guessing the hype was because cyanide is known to be fairly effective at killing cancer cells....just as effective at killing the normal cells too which is problematic.