Thank you for this invaluable, clear and easy to understand advice. I have been following it for 3 weeks. My hen had; sour crop, an impaction and a pendulous crop all at once. I practiced all your suggestions in order, and this morning ,finally, her crop is 100% empty! It has taken 3 weeks but it has worked. I will continue to monitor her, but because of this page I now understand what I am dealing with. Many thanks.