I found a excellent article on how a hen lays an egg. One day, I saw Fancy on the nest. She arose just as I came up, and an egg dropped to the leaves. It was an amazing sight. I certainly did not know hens stood to lay. I have seen them sitting down and the tail rising really high. I thought they were laying. Probably, they were straining/pushing and stood when I was not there.
Have you ever seen an egg drop from a hen? Raise your hand if you have chickens. Are you getting chicks?