This guidance has been prepared for The Crown Estate as part of the Strategic Ornithological Support Services programme, project SOSS- 02. It provides guidance for offshore wind farm developers, and their ecological consultants, on using a collision risk model to assess the bird collision risks presented by offshore windfarms.
The guidance has been extended in this March 2012 version to make use of flight height distribution data, where that data is available and robust; and to include a methodology for considering birds on migration, for which survey data on flight activity may be limited.
The guidance is accompanied by
- a Collision Risk Spreadsheet, which enables the calculations required to be undertaken and presented in a standardised manner
- a Worked Example, to illustrate the process
- a Tidal Variation spreadsheet, for use only when tidal effects may be significant