Just moved 5 week old layers into their new area from the brooder. The coop is 6x8 elevated with large run out front and under coop. I put them straight in the coop at dusk the first night. The second night (tonight) only 2 went into coop at dusk and the rest are nesting outside under the coop. We have many critters so I do want them inside at night. Any suggestions on how to get them to go into coop at night?