Does the bat poop actually work any better than bird poop?

I think the difference is the lack of nitrogen leaching caused by the critters pooping in the dry. So a barn roost for swifts etc. would work as well.

Most of the huge deposits in places like Chile were made economically exploitable by steam power in the C19th have been used up, and what remains will be small beer. I would have bat roosts anyway, but I would for resilience' sake try to spread increased fertility across as many sources as possible.

Hello Oilmanbob and Lantern Rouge,

Thxs for responding. Good points by both of you,thxs. Worms and composting are good, but they don't eat the flying critters, and most birds poop everywhere. Yep, keeping any natural fertilizer free from water is the secret to reduce nitrogen leaching. We need 'em all; as many species as possible from extinction to optimize the decline: worms, birds for daylight, bats for night-time; the Circle of Life.

Bob Shaw in Phx,Az Are Humans Smarter than Yeast?