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Pendulous Nests. Pendulous nests usually have a round or oval nest area with a neck that suspends from the tip of a branch. The neck of a pendulous nest varies in length and width depending on the bird. Different birds create entrance holes in different areas of nest.
When it comes to birdhouses, the size and design depends on the type of bird that will seek out the shelter. Each kind of bird species chooses their nest and homes differently. Some prefer holes near the ground, while others enjoy being up high in the open. Some birds, like cardinals and orioles, do not nest in boxes.