Link to BBKA article
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It is important not only to be able to recognise the Asian hornet but also to be able to recognise the primary nest of the species. This looks looks very similar to a wasp nest and starts off about the size of a tennis ball and grows throughout the spring/summer. It may be found be in garages, sheds, woodstores and sides of building etc. If you have found something similar - please contact your local Asian Hornet Action Team, which you can find details of here.