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1. The main potential risks to birds from offshore windfarms are collision; disturbance / displacement; barrier to movement; and habitat change / loss. There is an increase in potential risk of collision with wind turbines if they are located in areas in which there is a high level of flight activity. That high level of flight activity can be associated with locations where food supplies are concentrated or with areas where there is a high turnover of individuals (possibly commuting daily between nesting and feeding areas or passing through the area on seasonal migrations). That collision risk can be quantified using collision risk modelling (CRM).
2. In line with best practice, CRM has been carried out for the proposed East Anglia THREE project (the proposed project) to provide preliminary environmental information (PEI) for a selection of seabird species, identified as at potential risk from the baseline information (Chapter 13, section 13.5.2), using the most recent version of the Band collision risk model (Band 2012). In addition to those seabirds identified as at risk from the baseline information, CRM has also been carried out for a selection of migrant seabirds. Parameters used within the collision risk modelling are provided without prejudice and will be reviewed, in consultation with key stakeholders, prior to the submission of the final Environmental Statement.