I have attached the box to the outside of my cage. The front screw over your nest box entrance was very difficult to tighten. Not enough room for my hand to get into the box to tighten the screw, I managed but it was very difficult. I keep the boxes outside of the cage or they'll rip the wood to shreds. It's well done. Too bad they didn't use wood that soft, but that's how they make them all. The box is large enough for the mother bird to lay her eggs comfortably. A male and female fit in there together, but my female pulls the box in front of her. I give a thumbs up.
Yokohama Parada Spec-X 225/65 R17 102H summer
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