![]() By removing any perches or similar ornaments that predators could cling to, you make it more difficult for them to access birds or eggs inside the house. Birds do not need a perch to move in and out of the house, but a predator will use the perch as a convenient handhold to steady themselves when they raid the nest. Removing perches: A perch on a birdhouse is more than just decorative, it is dangerous.If the tree or pole is too wide for a baffle, a large, broadsheet of smooth metal wrapped around the trunk will serve the same purpose to keep predators from climbing. Metal baffles are more difficult for predators to climb, and attaching a birdhouse to a metal pole will provide even more protection. Installing metal baffles both above and below the house as necessary will help minimize predator intrusions. Baffles: Predators can easily access birdhouses by climbing up poles or approaching down trees from above the house.Longer, wider roofs also provide better shade and rain shelter for the entrance hole to keep the house cooler, drier, and more comfortable for nesting birds. A longer roof that extends 5-6 inches in front of the house and 2-3 inches on either side provides a built-in baffle to limit predators' reach and prevent them from accessing the entrance. Roof size: Large predators such as squirrels, cats, and raccoons may sit on a birdhouse roof and reach inside to attack the nesting birds or chicks. ![]() A simple piece of pipe 2-3 inches (5-8 cm) long attached over the entrance hole can work, and birdhouse manufacturers also offer tube entrances fashioned like hollow branches for aesthetic appeal and camouflage. Many cavity-nesting bird species don't mind a longer entrance, but predators lack the extra reach necessary to stretch through the tube and endanger the birds inside.
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