I think someplace like Texas A & M should develop a hybrid grass that was perfect for geese. Call it goose grass. It would have to be drought tolerant, never grow longer than 4 inches, never turn yellow or brown always be green and grow from seed to full height within 24 hours of planting. After all, if they can hybridize a square tomato so that they fit neatly in the corners of shipping boxes they should be able to do that...right.right shade, length and width evidently