Made of FSC™ certified wood, that is sourced from forests that are managed correctly and responsibly according to strict environmental, social and economic standards and other controlles sources, bird nests are essential for allowing your birds to nest in peace. They are equipped with a metal hook for attaching them to your birds habitats, our bird nests can be attached to all Ferplast cages to replace one of the habitat doors. They have a nice themed decoration at the front and a comfortable lid openable for easy cleaning.