Rescue duck having trouble breathing

[Duck mama101]

I had just got her as a rescue yesterday she is a jumbo Pekin and was not in the greatest of conditions she is still very skinny and tonight we noticed that when she breathes out it sounds like a whistling noise but it's being forced out she breathes in fine with no noise but whenever she breathes out I feel like she has to put some force behind it I'm using pine shavings and she has a deep enough bowl to be able to fully submerge her beak we checked in she had clear nostrils
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[Isaac 0]

Hi, there.

I posted in your thread on the Duck Forum.