found this Brian, might be of some help, 10" apart approxhttp://forum.pigeonbasics.org/public/style_emoticons/default/emoticon-0138-thinking.gif http://lh6.ggpht.com/_rn7M_1zBa2w/TDWjWs8agxI/AAAAAAAAALI/A532-3Y4VWk/s400/08072010020.jpg http://nepigeonsupplies.com/images/cart/1164%20Perch%20Tree.jpg Four V-Perches mounted together for quick installation on a flat wall or the face of a wall stud. Perches are spaced 10" apart. Top perch to bottom of bottom perch is 34".