Comfy Nest Being Torn Up?

We had an old helmet in our garage that had been the recipient of a nest each spring for many years. For some reason the helmet was taken down. But there was another helmet left on a motorcycle after a ride a month or so ago. Right on cue, a feathered friend came looking for the helmet for a nest and since the old helmet was gone, they attempted to choose the newer one for their babies. Unfortunately for momma bird, that idea was squelched and the new helmet was cleaned out and brought inside. No baby birds in the …