A birdcage (or bird cage) is a cage designed to house birds as pets. Antique (or antique-style) birdcages are often popular as collectors' items or as household decor but most are not suitable for housing live birds, being too small, or of unsafe materials or construction.ood quality cages designed for pet birds are more suitable. Most parrot cages are made or wrought iron and painted with a non-toxic paint referred to as powder-coating. However, the newest trend in the market is cages made of solid stainless steel.
A viewport is a 2D rectangle that defines the size of the rendering surface onto which a 3D scene is projected.
To Work With Maps in Viewports. 1  Make the desired display map the current model space map. Do one of the following: Create a display map. In the Task Pane, select an existing display map from the Display Map list. 2  Switch to paper space. 3  Click and select from: Rectangular â Lets you specify two corner point to set the viewport shape.