The first breeding Woodcock Survey was undertaken in 2003 (PDF) estimated a breeding population of 78,000 males in Britain. Thus providing a baseline against which to assess future population change. During winter, it is estimated that up to 1.5 million individuals may be present in Britain and Ireland; mostly originating from northern Europe and western Russia.
How to get involved
Log in to British Trust for Ornithology (BTO) to submit records / use online recording forms : http://www.bto.org/volunteer-surveys/woodcock-survey