The AJ has been handed photographic evidence that proves pigeons are taking over the much-troubled Scottish Parliament building. It is less than seven months since Holyrood open its doors, and specialist cleaners have already been called in to clear mounds of bird muck from both inside and outside the £431 million building. However, the unusual problem has not come as a surprise to many of the project's critics, who previously warned that the design, by EMBT and RMJM, would create the UK's largest pigeon loft. Long-term Holyrood observer Peter Wilson, who took these photos, said: 'I was amused to see that the birds had no trouble accessing parts of the building that humans couldn't reach. There are a fair number of internal light wells and courtyard areas that can't even be reached for maintenance purposes, but which are being steadily filled in with the Scottish pigeon fraternity's finest guano.'