For first aid in any case of stress, such as shock from predator attack, fighting, layer stress, agression, extremes of heat and cold and transportation:
A small amount of organic sugar (just enough to cover the end of a teaspoon) dissolved in an egg cup of warm water.
For secondary treatment in bad cases where the bird is unsteady on its feet, gasping for breath and changing colour:
1 teaspoon of melted coconut oil
enough turmeric to cover the end of a teaspoon
grate a brazil nut on a fine grater and just take 6 tiny pieces.
If the bird is still gasping once you have removed it from the stressful situation, do not feed any of the above in liquid form:
feed the sugar by dipping a small piece of fruit into it
dip the coconut oil in its normal solid form into the turmeric and brazil nut and place in the beak - right at the tip.