Thank you for your reply.... Let me try to answer all you asked
Is this an avian vet you saw? Yes and he has a great reputation
The fact that they told you there would be no charge if she did not make it through surgery is a bit alarming to me ,<<< The vet said the decision to do it or not is a personal one the doctor didn't want to influence me BUT...
<<< the doctor finally did say what you did and said unless her life was in jeopardy its risky. He said they would not feel right with the high risk IF she did not make it thru the surgery to charge me. He said she is otherwise healthy and he has seen worse cases of budgies with this kind of tumor. The doctor did say IF she went thru the surgery, and it was successful. that she would be much more comfortable BUT there is no guarantee it wouldn't come back. It is a risk and I need to make the decision
Corn is fattening so I would stop that or greatly limit the amount, how much and how often do you give that?<<< I hang a small ear of corn for them to nibble on 2 times a week and they really like it.
I would also cut out the treat sticks and reduce the millet. My birds get one little ball of millet each that I pick off the spray and not the whole spray of millet.>>> yup, I am doing that from today forward!
Do you have seed in their cage all day for them to eat ?>> yes I do it is in there all day every day.
There are ways to cut down, you can offer 1/2 -1 teaspoon of seed in the morning and again in the evening and leave pellets in the cage during the day.>> that is what the vet also said!!
Does she get exercise, out of the cage time? no, they are in a huge fight cage it is 5 feet wide and 6 feet tall it is huge and they have perches, toys and all kinds of things to play with. In the 5+ years, I have had them, they hate coming out and IF I try to get them out they fly right back and RUN in their house. So, I don't try anymore. I can leave the cage door open and they won't go near it.
I just hate seeing her look so large she looks uncomfortable. And for years I tried to get them on pellets with no success. I also enjoyed watching them look very happy nibbling on their millet, treat sticks, and corn! they would sing eat play and that made me happy knowing they are happy. And now I see I'm killing her because I gave them so much millet and treat sticks.