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The Bane of Backyard Birdhouses

There is nothing more disheartening to a backyard birder than to find tufts of feathers strewn about the yard, evidence of a successful hunt by an unwanted predator. For the bird lover, it is sad and frustrating to discover that nesting boxes or houses they have placed around the yard have been used as bait for unsuspecting birds.

Taking a few simple measures to ensure that birds are safe from unwanted predators such as feral cats, snakes, squirrels, raccoons, and nuisance birds can go a long way in preventing frustration and heartache for the birder.

Place birdhouses on a steel or PVC pipe a minimum of 4 feet from the ground to thwart climbing animals that may harm birds. And though it may seem like a good idea, never grease or oil the pipe on which the house is placed with the goal of hindering the ascent of animals to the house. Birds whose feathers make contact with petroleum-based products may find it difficult or impossible to fly, leaving them particularly susceptible to the backyard hunters such as cats, dogs, snakes, or even larger birds. A better option is to place a metal baffle, or collar, on the pole just beneath the birdhouse to make access to the birdhouse difficult for predators.

Situate birdhouses 10-12 feet from tall shrubbery or trees to allow mature birds a quick escape should a cat or other animal approach. Be particularly wary of placing the birdhouse near areas a stalker may prowl unnoticed such as low-hanging pine branches, brush, or in flowerbeds.

Make certain the size of the birdhouse hole is appropriate for the type of bird desired for the house design. A large entry hole may invite unwanted birds such as starlings, sparrows, or cowbirds that may kill or oust smaller birdlings from the nest. Some mammals will reach inside of a birdhouse to snatch small birds or eggs, so ensuring a hole is no larger than necessary may deter animals from making the attempt.

A thick piece of wood (1 inch) with an appropriately-sized hole attached over the front of the existing entrance will also discourage animals from being able to access the interior of the of birdhouse. Some more determined animals such as raccoons and squirrels are able to gnaw their way into a house, so screwing or nailing a metal plate around the entrance will discourage chewing.

Hungry animals are attracted to the scent of food. Keep all pet food and bowls indoors so wandering animals aren't attracted the yard, and make sure grease and meats are cleaned

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