Apparently it's in the soldier fly larvae exoskeletons. I feed it as a treat on the ground.Wow thanks I will order some I wouldn't think a bug would be high in calcium but that's cool. How much do you feed them? Do you think they will fill up on cicadas this year? I am in the zone. I hope they don't gorge themselves and skip the feed.
Cicadas sound like good forage to me. We don't get them, but I know my hens love grasshoppers.