The Zylina Nesting & Roosting Box is perfectly sized for your hens to optimize egg laying! This easy to assemble Nesting Box is Blue with White Trim and can be added to a pen a large coop or a kennel to add extra roosting and nesting areas as your flock grows. The perfect solution for free ranging flocks! Zylina...Connecting Lifestyle With Nature. A portion of Zylina proceeds support Plant With Purpose to address global poverty and environmental damage. Zylina Poultry products include Coops Nesting Boxes Mealworms Perches & Pens.