# Commission Delegated Regulation (EU) 2020/689 of 17 December 2019 supplementing Regulation (EU) 2016/429 of the European Parliament and of the Council as regards rules for surveillance, eradication programmes, and disease-free status for certain listed and emerging diseases (Text with EEA relevance), Division 1: The early detection of HPAI in wild birds must be based on sampling and testing of birds that have been:

Extent: E+W+S+N.I.

(a) found dead;
(b) found injured or sick;
(c) hunted with clinical signs.
This surveillance may need to be increased, when HPAI has been detected in wild birds, by monitoring systems using organised patrols for detecting and collecting dead and sick birds.

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Source: https://www.legislation.gov.uk/eur/2020/689/annex/II/section/4/division/1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2020-689/annex-II/section-4/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.