HOW TO MAKE A BACK-YARD AVIARY 63 Birds’ Nests in Washington’s Coat, 63; Nests in Speaking Horn, 63; A Woodpecker’s House, 64; Martin Houses, 66; The Wren House, 66; Tin-can Bird-house, 68; A House of Straw, 68; A Barrel for a Martin House, 68.