Scratching-noise-in-attic-uk, scratching sounds scratching sounds are the most common noises you will hear in your attic and unfortunately the hardest to link to a particular animal. animals may be scratching to make room for nesting, burying food, or even just walking and creating similar sounds.. Scratching sounds - scratching and gnawing sounds may indicate a rodent type animal such as a mouse, rat or squirrel. flapping - flapping sounds can indicate birds have nested in your attic, birds will be most active in early morning. bird can cause heavy damage to your property and must be swiftly dealt with.