Leghorns lay white eggs.
I have exchequer (black and white flecked) leghorns which are really pretty but they only lay medium sized eggs and not as often as white leghorns... second year as expected their eggs get a bit bigger. They are flighty and dislike being touched or held but they are curious, quirky little birds and I like them a lot. They much prefer being free ranged to being penned in and they get absolutely everywhere because they are so curious! They can be quite sneaky about where they lay their eggs when they free range too.... I have an egg hunt involving ladders and crawling into small inaccessible places almost every day. It's fun for the first few weeks, but then the novelty wears off a bit. I keep them in an old farm yard with my horses and they have the run of all the stables and sheds and there are many little nooks and crannies where they can hide eggs and because they can fly, they are often up in the rafters. Two of them let themselves out of a tiny hole in the eves of the stone stable I keep them in every morning before I get there, but they come running to see what I've got the minute I arrive.
This is Daisy my white leghorn eating out of my hand and sitting in my lap. We got her just after she was feathered. When we first got her, She ran from me and was very flighty. After spending time with her, she now runs to the back door when she hears my voice in the house. She jumps in my lap. I can pet her and she doesn't shy away. We have had several leghorns like her and everyone of them has been friendly. Although Daisy is the first to jump in my lap. I find them to be curious, they seem smart to me, and no other hen that I have, lays like them. Since she started laying 6 months ago she has missed about 4 days. All of my other leghorns were the same, they lay eggs every day. It's a large white egg. The picture below shows Daisy's white egg and the browns from my RIR mixes.
Here is a close up of my sweetie with her friend Patsy. I love her rakish comb.
Here are her predecessors Trisha and Elphie having some cheesecake.
And here's Elphie on a hot summer day.
Edited by BY Bob - 3/25/16 at 9:31pm
They find the most outta the way places to lay. Then mine if you do find where they lay and collect the eggs they move.
So in my opinion keeping them cooped is the best thing. Unless you like easter egg hunts daily.