Quote (Nitrix @ 28 Jun 2012 21:39)
I found a baby bird recently, almost exactly that size, that had been abandoned, I took it to a Wild Bird rescue here in Denver - I would first check to see if that is an option.
They told us though that they use crushed dry dog food to feed baby birds they get in, until they are old enough to eat other things (I don't know what other things they meant)
I believe they meant insects.
I found this
How Much Food Is Enough?
The maximum amount of formula that should be fed to any baby prior to weaning should be approximately 10 percent of his body weight. The length of time between feedings should be determined by the amount of time it takes his crop to empty. (The crop is sufficiently emptied when you can feel little or no food remaining in the gullet, although it may remain slightly pendulous.) For most baby birds, it takes between four and six hours for the crop to empty.
Once every 24 hours, preferably at night, take a break from feedings. For example, if your bird's crop empties every four hours, you should be feeding him every four to five hours between 6 a.m. and midnight. Starting at midnight, though, leave at least a six-hour period of time for extended crop emptying, which will allow residual food (and its increased numbers of bacteria) to be eliminated. Not coincidentally, taking a break also allows you to get some sleep.
As the baby grows, plan on fewer feedings, using slightly more formula. While there is a theory that some species do better with frequent small feedings, the problem with this approach is that few people - breeders or owners - can maintain a high-frequency feeding schedule.
The most important thing, though, is to control the amount of food offered at each feeding: Never allow the amount of formula to exceed 10 percent of the baby's weight.
As the baby matures, he will begin to resist feeding. At that point, either reduce the number of formula feedings or eliminate them entirely. When feedings have reached only two or three a day, start your bird on solid food in the form of softened pellets or table food. If only two feedings remain and the bird resists food at night, eliminate the next morning's feeding. Over the next two or three weeks, the bird should get used to eating solid food, and you can cut out evening feedings altogether.