3 ms·This will also function as a hell of a bird vacuum.by randyrand 9y agoThis will also function as a hell of a bird vacuum.tempestn 9y agoThe input is at the ground level, and obviously you'd have grates and such to prevent things other than air being consumed.tempestn 9y ago(That's assuming the thing would work at all, which it wouldn't as far as I can tell.)