I work for a construction company and a Mallard duck laid eggs in a pond that we are demolishing in the middle of a heavy construction area. This is the 4th/5th week we have held up construction activities in order to not disturb her. We even set up a 10ft restriction barricade. She is still in the nest, but runs away anytime a worker walks by. The owner is getting upset at this unforeseen cost/delay and the mallard seems distressed by vibrations from machines over 50ft away. The eggs are taking longer than usual to hatch, not to mention it will be difficult to move the the birds out of the area once hatched. What are the actual regulations concerning protection and what should we do going forward?