Dr. Speer is a well known avian vet:I will try to see if I can get her an appointment tomorrow, but there are no emergency duck service available.
Believe it or not, there is not a plethora of poultry vets in the Bay Area. The ones I've been to so far have not seemed all that knowledgeable. The first one I went to asked me if my runner duck always stood like that. I knew I was in trouble when he said that.
http://www.medicalcenterforbirds.com/doctors.pml
He literally wrote a book an avian medicine:
https://www.amazon.com/Current-Therapy-Avian-Medicine-Surgery/dp/1455746711