... cage is 40cm*50cm*45cm, there are 3 or 4 nests of every layer ,There are 3 layers in all,It can ... cage is 30cm*50cm*45cm, there are 5 or 6 nests of every layer,There are 3 layers in all. ... It can divided 15 or 18 chambers. 3,this kinds of cage is 37cm*50cm*45cm, there are 4 ... nests of every layer,There are 4 layers in all. It can divided ...