My husband is making chicken nest boxes and wood duck next boxes. These are made from 1 x 12 solid wood boards with a 1/2 inch thick backing on them and an angled roof. These are very sturdy boxes. They holes measure roughly 10 inches by 11 inches and they are 18 inches tall in the back and 13 inches tall in the front. currently making 3, 4, 5, 6, 8, 10 hole boxes but can make anything on request. Prices start at $50 and go up depending on size. Also if you have another kind or next box you would like built just ask very easy to work with and love to have new ideas. Pictured is a 4-Hole it is priced at $60. Is also currently making wood duck boxes. These are $40 each. they have an angled and hinged roof for easy access into box. We are located near Corydon, Iowa but go to alot of sales and swaps all over Iowa Missouri, and eastern nebraska so can help with transportation.