oh, Bev, thats so annoying when the blooming crows (and magpies) take eggs. Yesterday, in one of the coops, two eggs had been pecked. I suspect that it may well be the birds, as there are nests in the big trees, and I can hear a lot of squawking. I bet they are listening for the cackle of the hens laying, then swooping down, pecking a hole so they can carry the eggs back to the nest and the babies .....an easy meal!!
I have noticed that the eggs laid in the barn are more plentiful, that may be because the hens go under the door, and its not an obvious route for the birds.