<html><head><style type=text/css><!--
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--></style></head><body>Acoustic identification of insects seems to be a hard problem (although entomologists are maybe not the best engineers), and most success has been with laser measurements:<div>http://www.popsci.com/blog-network/our-modern-plagues/identifying-insects-music-their-wings</div><div>https://medium.com/the-physics-arxiv-blog/entomologists-have-never-been-able-to-identify-flying-insects-automatically-until-now-ee4d93067443</div><div>http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1055&context=abe_eng_pubs</div><div><br></div><div>But I assume you are not trying to identify unknown insects but count bees, so it might be a far easier *detection* problem. </div><div><br></div><div>A quick google found this, which might be inspirational:</div><div>http://www.beehacker.com/wp/?page_id=103</div><div>http://www.beehacker.com/wp/?page_id=189</div><div>http://www.beesource.com/forums/archive/index.php/t-265140.html</div><div><br></div><div>(I am the quintessential scholar, immediately looking for what others have written rather than thinking for myself)</div><div><br>The American lawn has a curious history, I got "The Lawn: A History of an American Obsession" by Virginia Scott Jenkins - very fun. Replacing it with xericulture and flowering plants is a good idea. <br><br><br>Anders Sandberg,
Future of Humanity Institute
Philosophy Faculty of Oxford University<div><blockquote class="mcnt mori" style="margin:0 0 0 .8ex;border-left:2px blue solid;padding-left:1ex;"></blockquote></div></div></body></html>