National Geographic : 1920 Dec
j S i; GOSHAWKS: AN ADULT TIERCEL (MALE) AND A YOUNG FEMALE These are the fiercest and most competent killers of all, and therefore used principally by the " yeomanry" as meat getters. They are in " red " plumage for the first two years of their life, afterward becoming slaty gray above and barred below. Theyrequire carefulwatching in the mews(the buildings where the hawks are kept), lest they break loose, when they will go systematically about killing every other bird in the loft. They hunt on or near the ground, and, unlike the falcon, come to earth with their quarry. Among all hawks, the female is larger and more powerful than the male.