i just bought the scale and start weighing him every morning. No, I don't know what slow-crop or crop impaction is. Is the crop burn due to high temp of the formula? I also bought a food thermometer and according to the formula label, they say for the temp to be between 102-110. Would this be okay? as for the feathers, the neck is the only part he hasn't feathered. I feed him 3 times a day. Lastly, i bought him at a local pet store. thanks Jayd. Please feedback.