My 7 wk olds have been in their coop full time for about 10 days. They have been getting themselves up in the morning and walking down their ramp to their run since day two, but they will not walk up the ramp to put themselves to bed or out of the rain. They huddle in the corner until I put them away. My husband built the "Garden Coop" featured in some of the BYC ads...The rungs are about 10 inches apart, so I'm wondering if I may need to add more ?