Cream legbars were first introduced at the London Dairy Show in 1947 and received a written standard by the Poultry Club of Great Britain in 1958. Legbars grew in popularity to fill a niche market in the British egg industry for pastel eggs produced by free-range birds.
 
The chicks are autosexing which means you can tell male from female at hatch.  The females are chipmunk striped whereas the males are lighter colored.

Cream legbars are medium-sized fowl that are known for their active foraging and ability to survive in a free-range environment. The roosters are vigilant and protective of the hens, and the hens efficiently go about the business of gleaning every seed and insect from the fields and pastures they prefer. The hens are rarely broody and produce a large number of eggs. In 1952, seven legbar hens in England were monitored for a year. On the average they each laid 260 eggs. Cream legbar eggs are often deceptive in their appearance. They tend to be more spherical than most chicken eggs, and because of this they look shorter and therefore smaller. But, if you weigh the eggs you will find they nicely compare to other breeds.