I will concede that I do not know about the bats in your area - maybe in the US and Mexico. But I do know about ones in mine. Here the bats do help with mosquito control, I would not say it is going to put a dent in the population. Little brown bats which live where I am eat A LOT of mosquitos. I would bring them in just as I attract lady bugs into my garden as pest control.
There are not a lot of juried studies out there. Certainly not enough of different bat populations on different mosquito populations. I've seen the web sites you referred to in the past. I have seen them all cite the same org saying that there is not anecdotal evidence that bats, etcc, etc control the mosquito pops. I haven ot seen a journeled published article saying that they undesputably don't. I am not deluded, I am hopeful. I am hopeful that they will put money into researching biological controls and fearful that it will just be easier to start spraying - which many many cities have already started doing. We're never going to combat mosquitos - if we could there would be no malaria. Misinformation goes both ways - just as there is not hard scientific evidence that bats and martens don't control mosquito populations, there is not hard evidence that they have no affect. When I see articles publised citing real population ecology studies that say bats and martens definitely have no effect - maybe I will stop being "deluded".
I will call Austin a city. I am well travelled and very well educated in the sciences (Biology and chemistry). I have not been there but my husband has. It is a city. Compared to the places I spend my time where there are NO people and lots of wildlife and still untouched forest, it is a city.
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misinformation.