2009, COWRIE, Revised Best Practice Guidance for the Use of Remote Techniques for Ornithological Monitoring at Offshore Windfarms series https://portal.medin.org.uk/portal/start.php?tpc=015_977ecc865211479b986301d84a64eb2c This COWRIE report updates the Desholm et al. (2005) document on the use of remote techniques for ornithlogical monitoring for offshore windfarm studies. However, Desholm et al. (2005) did not provide offshore windfarm developers with clear and practical guidance on the ‘best practice’ application of remote techniques for effectively observing the behaviour of target bird species. In the UK, ‘best practice’ guidance to highlight appropriate remote techniques for assessing behaviour of individual target species, or groups of species, has been much needed. Consequently, the implementation of remote techniques in ornithological assessments within Environmental Impact Assessments (EIA) was variable during Round 1 (R1) and Round 2 (R2) in the UK.The aim of this report was not to re-iterate technical information contained within the original COWRIE report but to provide clear ‘best practice’ guidance. Our aim is to ensure that this guidance is applicable for ornithological assessments made within the planning and EIA process for the STWR and R3in the UK. 20090601 20090601