From what I can tell she is not eating and drinking. She seems to be isolating herself. Also it's 98 degrees here so I'm sure infections can flourish in this weather.
Before I start this I would like to make it very clear before I'm torn to shreds that I am 4 hours from any avian vet. So here we go...
Yesterday around 5 o'clock I noticed that my jumbo Pekin duck had a lot of flies harassing her vent. To get a closer look I found to gash wounds under her...