Our noisy sleeper

Olivia is the noisiest little baby and makes all these crazy sounds.  She doesn't cry a lot - but makes all kinds of strange peeps and squeals.  The strange thing is they mostly come out at night, making it hard for us to rest peacefully.  I always feel like i have to get up and look at her to make sure she is OK. Sometimes it sounds like she just needs a sip of water to clear her throat. Finally one morning I took a video of it.  she picks up the pace about half way through.  I would say these are pretty minimal, normally she will make much louder or stranger noises.

Anyone else experience this, the boys were not like this at all?