Hi. I am a new chicken owner and am building a coop for three hens. I'm building a modified version of the Purina coop. We have 1 chick that will grow into a large chicken (Light Brahma). The Purina coop recommends placing the coop 17" off the ground. Is that height going to be tall enough for a Brahma chicken to walk underneath? I want to place their food and water under the cover of the coop. I've looked everywhere that I can think of online to find out how tall our Brahma will be, but I'm only finding the weight measurement (9.5 lbs.). Thank you for your help.