Now remember the bird must be tame and calm or else it may get hurt. It also can't be a chewer or else it may ruin your k'nex.
The bird must be between the size of a cockatiel and a lovebird
or else it may get its head stuch in the holes or stuck in the path. Make sure you can easily remove walls if your bird gets itself in trouble, needs a quick escape or you just want your bird back. Oh yeah, and always supervise your bird when it is in the bird maze and NEVER LEAVE IT ALONE IN THE BIRD MAZE!!!!!!