 The female is very similar to the male but the upper parts are somewhat more brownish and the feathers on the crown have narrower black central stripes . The throat and breast are paler with fewer , smaller markings . The beak is similar to the male 's winter beak . The juvenile are a duller colour than the adults with pale coloured streaks on the feathers that have dark streaks in the adult . The young assume their adult plumage after their first moult in the autumn . 
