Waiting for the eggs to hatch

I am in London at the moment but David is back home and is keeping an eye on the hen eggs in the incubator which are due to hatch this weekend. We have 10 - they are all exchequer leghorns - but the news at the moment is that only one has started to show signs of hatching. We really could do with a good number of new hatchlings however. We need to build up the number of hens we have as we will have more demand for our eggs this years. We are looking to increase the number of times we run the Allotment Cafe at Marley Hill Community Centre, we have more people wanting to buy our eggs and we need more to swap for other people's produce.