The bird nesting season begins on March 1st and runs to July 31st. It is advised that any work carried out to trees and hedges should not take place during this season. However, in some instances this is neither practical nor possible. It is the contractors responsibility to ensure that work to tress and vegetation carried out within this period avoids any impact on nesting birds. Before any work is carried out within this season a thorough visual survey needs to be carried out to ensure there are no nesting birds present or that the intended work will not disturb any birds nesting near to the work site. During this season it should be assumed that nesting birds will be present and therefore it is the duty of the client and contract to prove otherwise.