Hollow Top
Designed to replicate a broken off, hollowed-out tree limb larger than 30cm in diameter, this nest box is suited to black cockatoos, and has just been hung in position. I use a length of chain, which is prevented from cutting into the tree by being threaded through thick recycled hosepipe (in this case from an old washing machine), attached to the back of the box with bolts/carabiners. Using this method means the tree is not cut into with screws or nails, and the chain loop is large enough for the tree to continue growing; it can also be adjusted years down the track if need be, or easily removed.
Black Cockatoos usually do not breed in the Perth region but in recent years Forest Red-tails have used similar nest boxes at Murdoch university, not far from this park. Existing hollows in this reserve are full of feral bees, and hopefully the vertical orientation of this box prevents bee colonies from moving in. So far I have installed dozens of nest boxes of this design and none have had bee issues.
Hollow Top
Designed to replicate a broken off, hollowed-out tree limb larger than 30cm in diameter, this nest box is suited to black cockatoos, and has just been hung in position. I use a length of chain, which is prevented from cutting into the tree by being threaded through thick recycled hosepipe (in this case from an old washing machine), attached to the back of the box with bolts/carabiners. Using this method means the tree is not cut into with screws or nails, and the chain loop is large enough for the tree to continue growing; it can also be adjusted years down the track if need be, or easily removed.
Black Cockatoos usually do not breed in the Perth region but in recent years Forest Red-tails have used similar nest boxes at Murdoch university, not far from this park. Existing hollows in this reserve are full of feral bees, and hopefully the vertical orientation of this box prevents bee colonies from moving in. So far I have installed dozens of nest boxes of this design and none have had bee issues.