In Europe, clutches are typically laid in April, and usually contain five or six eggs, but clutches with as few as three and as many as ten have been recorded. The eggs are laid in early morning, usually at daily intervals. On average, the eggs of the nominate species measure and weigh . Small for the size of the bird, they are typically pale blue-green, with close specks and spots of olive brown, but show much variation in ground and marking.