Have you seen and read this one?
https://www.backyardchickens.com/threads/tube-feeding-ducks-updated-5-7-2020.1211994/
This is how I learned. I did have everything already on hand though. Pet smart or another pet store should have what you need even the Kaytee baby bird food.
As for taking her outside can you keep her dry? or possibly have one of her favorites visit indoors . I hope you get power back up soon.
Didn't look like there was any blood in her poop? and she must be eating something. She has pooped.
@Miss Lydia , Thank you. We did read that, and we are ready to try but we can't find a feeding tube anywhere, and of course, it's the holiday.
We did take Mouse out yesterday for a couple hours, and Angus was SO glad to see her. He came running across the field making his little boy duck quacks when he saw the carrier.
It was not raining, and she seemed to enjoy being out with her buddies, although she is clearly much weaker now. Still she will preen and flap her wings, but every action like that exhausts her. She spent a lot of time just tucked in together with Angus, Stella and Amelia.
She continues to be defensive when Amelia or Stella tries to eat her worms, which is amazing. When we went to bring her in, we opened her pen to get her carrier, and she stood right up, stepped over the opening (pretty big step) and walked right over to Angus. She then proceeded to walk around a bit, and Angus just politely and lovingly followed her. So sweet!
We brought her in, and we have a space heater now in the bathroom, which she really likes. She spent some of the afternoon tucked up close to it with her bill tucked under her wing. She looks comfortable and very peaceful. She was, however, up for energetic swimming in the tub before evening meds. It's amazing to us that she still gets so energetic. She swims, drifts, quacks. She even tried to do a couple wing flaps while swimming. Amazing. We offered her every variety of food of which we could think. She would pick and nibble a little and maybe ate one a worm, but again, no real eating. It's remarkable how strong she is when we swaddle her for her pills. She is still drinking well when in the tub, and she is clearing her nares and eyes under the faucet.
Last night we crated her in the bathroom with food and water and the heater on. In the morning, she was sitting at the door, alert and ready to come out when we opened the door. She had a good swim, and again we offered her everything under the sun to eat. We have not tried scrambled eggs yet...maybe this afternoon. She is now sitting in front of the heater drying off.
It's raining a cool (cold!) today, and so I don't think we'll be able to take her out. Is there a risk of letting her swim too much, as long as she is still preening and has the heater when she gets out? She seems happiest in the tub. It's also the time she drinks and nibbles on things.
Thank again, you all. We love this girl Mouse!