Welcome to BYC, Clare! Please make yourself at home and we are here to help.
Sounds like you have a lovely flock! Aren't those fresh eggs just the best!?
As for them making lots of noise, there are several questions you need to ask yourself: First of all, are you sure the are all hens? Secondly, are they kept in a cramped space? (This will often cause them to get cranky and loud.) Are they receiving enough water and nutrients in their diet? (Poor diets or lack of water can cause them to get stressed and make lots of noise.) And lastly, are all of them laying? (Hens in lay tend to be louder than hens who aren't.) The best thing you can do for them is make sure they have plenty of space, access to water, food, fresh air, sunshine and dirt and have plenty of things to entertain them. Bored chickens often grow loud too.
Good luck!