Parliament’s resident peregrine falcons are expected to have an impact on a £26 million, three-year project to replace the House of Lords’ cast iron roof above the chamber, according to reports. The work is planned as a multi-year effort, but the presence of nesting peregrine falcons introduces additional constraints for contractors and project planners. The reports state that management of the birds’ nesting activity could add cost and complexity to the timetable and delivery of the roof replacement, with the effect described as unavoidable and major. The disclosures come as the project moves forward and planners account for operational requirements linked to the birds at the parliamentary site. While the articles emphasize the potential for added burden on the project, they do not provide specific revised dates, revised budgets, or detailed mitigation plans. Overall, the information indicates that the roof replacement remains planned for the three-year window, but the falcons’ presence is likely to influence how and when elements of the work can proceed.