Are the Nesting boxes all built for any breed chicken to lay eggs in? Katrina B. | Hatching Time August 04, 2021 17:00 Yes, the Nesting boxes are 1 size fits all. Related articles Do we sell Bee Incubator's? The alarm on my Incubator keeps beeping code says ALR15 or ALARM 15, what does this mean? Comments 0 comments Please sign in to leave a comment.