EASY COOPS Chicken Coop Plan 4x6 Assembly Instructions Manual page 18

STEP 15
Assemble The Chicken Ladder
15.1 Assemble the ladder using 3/4˝x 3/4˝, 3/4˝ x 1 1/2˝ and 3/4˝ x 5 1/2˝ pressure-treated lumber.
You will need one board cut to 1´, two boards cut to 3´ and four boards cut to 11˝.
15.2 Connect the beams with 2˝ wood screws.
15.3 Install the ladder at the studs with the help of 2˝ screws.