Scratching, calls or nesting material require identification before removal. Wildlife protection and humane handling can change the timing and professional needed.
Published by Chimney Sweep Pages · September 24, 2026 · Editorial method
First decision
Do not light a fire to drive animals out. Leave the appliance unused until assessed.
Possible explanations—not a diagnosis
An animal entering through an open termination
An active bird nest
Old nesting material or another obstruction
Several conditions can occur together. Only an appropriate on-site assessment can distinguish them in your home.
What the investigation should clarify
Ask the chimney company whether it handles wildlife or coordinates with a wildlife professional. Active nests may be legally protected. Species identification and advice from the relevant wildlife authority should come before removal or closure of the opening.
Do not reach into the flue, seal an occupied chimney or attempt to smoke animals out.
One question worth asking
Who will identify the species, confirm lawful handling and inspect the vent after the obstruction is resolved?
Ask for the findings, access limitations and proposed next steps in writing. Keep diagnosis separate from a repair estimate so you can seek another opinion with the same evidence.