I have bat house plans but am not sure we have bats to use them. I've seen 4 purple martin houses at a house down the road a bit. I'll have to ask if they have any residents, didn't ever notice any. Both are excellent natural controls as must be the fish in my ponds as we have only a few mosquitos. According to my zoologist PhD buddy many more mosquitos come from jars, old tires, and the like which can hold a bit of water for a period than a stocked pond ever thought of producing.
Our state bird (for last 50 yrs as of a Few weeks ago) is the scissor tailed flycatcher. It is very pretty, highly manuverable and according to one conehead, consumes massive quantities, of bugs. It winters in the tropics but nests here. Hmmm, smart bird.
'splain me the part about bats eating chiggers. ????? Bats eat their prey on the wing, right? Ever see a bat peckin' and scratchin' in the weeds? Chiggers, I don't believe, fly. far as I know they hatch out and crawl around looking for you or some other mamal. If there were a large enough bat population, perhaps the guano would do something deleterious to the chiggers.
Forgive lack of emoticons (sp), since no one ever takes me seriously, I haven't felt the need to use them. OK, the truth, never found out how. You shouldn't expect it, considering my bio.
Patrick