Leghorn
A variant of Chicken (Gallus gallus domesticus)

A lightweight, active Mediterranean breed and the classic high-output white-egg layer (the white commercial layer's foundation). White is the best-known variety.
Keeper tips for this variant
They're flighty and great fliers — clip a wing or use tall fencing, and offer shade in summer since the large single comb is heat-adapted but the birds startle easily.