It may not occur to you that strange sounds coming from the chimney are not caused merely by the settling of the house, but may potentially be caused by birds, racoons, or other critters. Chimney Swifts are protected by the Federal Law under the Migratory Bird Treaty Act. This treaty states that it is illegal to remove active nests of these birds. Only after the baby birds have flown away from
the nest with their parents is it legal to remove a nest. Companies and homeowners found violating this act can face huge fines from the federal government.Chimney Swifts use their glue like saliva to construct nests right off of the side wall of your flue system. This warm, sheltered area is the perfect nesting spot for their young. Using their saliva they make nests of of sticks, twigs, and other debris that is absolutely flammable and may cause a chimney fire.
With all this being said, it is important to select a chimney sweeping company who is reputable and will not illegally remove the Swifts, which can cause you unbelievable trouble. If you may have a Chimney Swift problem, be sure to inquire about their practices in these situations. Remember that Chimney Swift removal blatantly violates the Migratory Bird Treaty Act.
Once the birds have flown away, it is prudent to have a chimney cap installed on your chimney to prevent this situation from occurring again. Chimney Swifts can be particularly annoying during the morning hours, and their removal can cost a homeowner or chimney company up to $10,000 per bird or egg. After they have flown away it is also necessary to have the chimney swept before you burn a fire. If you do not, the debris and nesting material lodged in the flue system can catch fire and cause a chimney fire to occur.