I'm loving every trick in your book, Laura! Thankfully Ta-dah is as well!
Thanks! I'm glad that trick worked! She wouldn't try it just from a bowl....
I weighed it she took 3 grams of baby bird formula!!!
I will add this again as nutritional support is so important, you have seen that play out twice with 2 different sick birds in my flock
" Special nutritional requirements for debilitated birds
Extra nutritional support for debilitated and diseased birds is vital and plays an essential role in ensuring recovery of the avian patient after disease or debility. Enteral nutrition is currently the most usual method of supporting the debilitated patient, with parenteral (intravenous) nutrition still being in its infancy in avian therapeutics.
First, fluid requirements should be assessed, as any animal will succumb to dehydration long before starvation. The reader is referred to chapter 14 for a more detailed discussion of this topic.
Second, energy requirements should be estimated. These can be calculated roughly from the MER by multiplication as follows:
Starvation = 0.5 × MER
Trauma = 1.5 × MER
Sepsis = 2.5 × MER
Burns = 3–4 × MER
From these crude estimations, a rough idea of the levels of nutrition demanded and the energy concentration of the diet can be derived.
Third, protein requirements should be evaluated, as debilitation will increase amino acid and protein turnover. This may be through the increased use of proteins in the immune system response, or for repair of damaged tissue or simply after using tissue proteins as an energy source."
https://veteriankey.com/avian-nutrition/
About weight loss as early sign of illness .
What is Weight Change?
Evolution equipped birds with the habit of masking any illness as a survival tactic. A sick bird was an open invitation to predators who were attracted to target the weak and sick. Even today, your pet bird still retains that instinct to hide how it is feeling.
By regularly weighing your bird and teaching him to step up to the weight perch and hold, then step down, it will make your life easier to monitor his weight. Weight change is one of the best early indications that your friend is not feeling the best.
A weight change in your pet bird may be a sign of a serious health issue; it is often the first warning of disease.
Symptoms of Weight Change in Birds
You will need to weigh and record your bird's weight around three times per week to establish a normal weight.
Be observant for other signs that can indicate all is not right such as behavioral changes
Your bird may act bright and alert when being watched but lapse into a huddle and fluff up when it thinks it is not being observed
Wing droop, one wing may dip lower than the other
Sitting on the ground rather than on its perch
Tail bobbing
Open mouthed breathing
Changes in appetite and eating habits
Types
A weight loss of more than 3% of body weight from your bird over several days, indicates that your pet should be taken to your veterinarian soon. If your bird loses over 5%,
then this is a very serious situation and needs immediate help. It may be life threatening for your pet so don’t linger.
https://wagwalking.com/bird/condition/weight-change