The courtship display of the drake teal involves the bird dipping the tip of its bill under the surface of the water, then whistling, arching its back and tipping its head back, while raising its wings across its back and cocking its tail. Like most ducks, female teals take sole responsibility for rearing the ducklings. The nest is constructed on dry ground on an upland moor, often amongst bracken or under gorse. The nest is lined with dried leaves and down from the female's breast. The eggs, laid in April or May, are greeny-buff and may number as many as ten. They hatch after three weeks of incubation and the duck leads them down to water as soon as the ducklings' down is dry. Teal feed on waterweed, insects and other water invertebrates. Teal have been a quarry species for centuries as they are considered very good eating. Bones from the birds have been found in the Roman settlement of Silchester in Hampshire.