Editing Pest control (section)

==On airfields==
{{Further|Bird strike}}
[[File:JT8D Engine after Bird Strike.jpg|thumb|[[Jet engine]] fan blades damaged by [[bird strike]]]]

Birds are a significant hazard to aircraft, but it is difficult to keep them away from airfields. Several methods have been explored. Stunning birds by feeding them a bait containing stupefying substances has been tried,<ref name=Murton/> and it may be possible to reduce their numbers on airfields by reducing the number of earthworms and other invertebrates by soil treatment.<ref name=Murton>{{cite book |author1=Murton, R.K. |author2=Wright, E.N. |title=The Problems of Birds as Pests: Proceedings of a Symposium Held at the Royal Geographical Society, London, on 28 and 29 September 1967|url=https://books.google.com/books?id=kx_gBAAAQBAJ&pg=PA100 |year=2013 |publisher=Elsevier |isbn=978-1-4832-6836-1 |pages=100, 184}}</ref> Leaving the grass long on airfields rather than mowing it is also a deterrent to birds.<ref>{{cite book |author=Reed Business Information |title=New Scientist |url=https://books.google.com/books?id=DLTpT4U7rJcC&pg=PA44 |date=29 May 1986 |publisher=Reed Business Information |pages=44–47 | issn=0262-4079}}</ref> Sonic nets are being trialled; these produce sounds that birds find distracting and seem effective at keeping birds away from affected areas.<ref>{{cite web |url=http://www.exeter.ac.uk/news/featurednews/title_510056_en.html |title=Sonic net could save birds and aircraft, study suggests |author1=Swaddle, John P. |author2=Moseley, Dana L. |author3=Hinders, Mark K. |author4=Peyton Smith, E. |date=6 May 2016 |publisher=University of Exeter |access-date=28 August 2017}}</ref>