Birds while spaced out? False positives?

Love my use. But today I had an odd session. I kept completely spacing out a few times during a mind meditation. Each time, the birds would explode. Lots of chirping through out the space out. And when I realized my attention had wondered and I attempted to bring it back, the chirping would stop and I’d be back on a more expected Muse experience.

This has happened a number times before.

Any ideas on what’s happening?