Something is concealed in the bathroom ductwork

During the last few weeks, I’ve heard a unusual sound in the ductwork above my bathroom.

At first, the noise was faint plus subtle.

I only heard the unusual sound in the middle of the evening, then yesterday, I started hearing the unusual faint sounds while in the day as well. My hubby has been out of village on company for the past 3 weeks, so I cannot have him check on the problem. I wasn’t going to pay a business to come out plus look at the ductwork, but I was afraid that an creature was stuck in the attic… One of my coworkers got myself and others worried when they told myself and others that an exterminator found a litter of kittens in her attic ductwork. I doubt it highly that the problem was a litter of kittens or puppies, but the noise wasn’t going away. I contacted the Heating, Ventilation, plus A/C corporation first, plus they gave myself and others an appointment for the next day. On Saturday, the Heating, Ventilation, plus A/C specialist came over to check on the problem. He disattachd the wall board from our attic entrance plus carefully climbed into the ceiling. He was gone for 20 or 30 minutes, before I saw his face again. He came down the stairs plus grabbed some additional tools. He gave myself and others no further information at that time. He was gone in the attic for another thirty minutes, but when he finally came back, he was carrying several small pieces of sheet metal. The Heating, Ventilation, plus A/C specialist told myself and others that the ducting metal was loose, plus it was rubbing together every time the Heating, Ventilation, plus A/C device was on. That was the source of my unusual sound.
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