Quote: Get a baseline weight on her... The pro's say to tube when a bird loses 5% of it's weight. Of course you would also have to figure out what was causing the loss, but tubing will buy you time to do that. Once they get to about 1/2 their ideal body weight it's really hard to bring them back. Here are some body score pictures:
Once they get to a one it's very hard to save them.
-Kathy