Bird box hole size? Precocial birds, like cavity-nesting waterfowl, however, leave the nest much sooner and will not be as large, so a smaller house size can be acceptable. For birds which use an open-fronted box, the size of the opening is much less of an issue and a ‘one size fits all’ approach can be used. These birds have been encouraged to use boxes, since their introduction in 1862, by farmers who hoped wanted the numbers to build up to help combat grass grubs and other insects. The base of the nestbox should be 150mm to 180mm across and the hole should be at least 150mm from the base. Do you know that the diameter of the hole determines which birds will fit into the house and which birds will leave it alone? The most well known introduced bird to use nesting boxes is probably the Starling. I was given a bird box for our garden, but I think the hole is too big. The dimensions for a safe, comfortable birdhouse are interior measurements, and improper measuring could subtract as much as two inches or more from the overall size of the house, making it much too small to be attractive and useful to the birds. There are different bird house dimensions for different species. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board. Learn tips for creating your most beautiful (and bountiful) garden ever. She has over 16 years experience writing about wild birds for magazines and websites. When building or choosing a birdhouse, don't forget to consider: With proper measurements and careful consideration of what makes a house attractive to birds, it is possible to offer the perfect housing for your backyard birds to raise their families. Starling boxes … Nesting boxes can get a build-up of mites, particularly in places that don't experience freezing temperatures. To clean your bird box, simply use boiling water and scrub it. Nest boxes with a hole are prefered by blue tits, great tits, nuthatches and tree sparrows. Bird House Dimensions. Bird House Hole Size (Best Dimensions) When building a birdhouse or nestbox , the hole size (entrance) is one of the most important decisions you will need to make. Shipping | Privacy Policy | Satisfaction Guarantee, Site maintained by RKS Marketing & Web Design. Cavity-nesting birds are flexible in their requirements for the preferred size of a birdhouse, but there is more than species preference at stake when planning the appropriate birdhouse dimensions. See the table below for the proper interior base, overall interior height, and entrance height measurements for the most common and desirable birds that use birdhouses. Help needed. There is a lot of debate regarding this practice, with valid arguments on both sides of the fence, but the bottom line is that birds have wings and naturally should exercise them. Fledgling Size: Altricial baby birds, such as most songbirds, can be nearly the size of adults by the time they leave the nest and will need a bigger house to accommodate their growth. As a guide to the beginner, a box of the following dimensions is ideal for pigeon nest boxes: The overall length of each box should be around 24 inches, the height 18 inches and the depth about 17 inches. Melissa Mayntz has been a birder and wild bird enthusiast for 30+ years. Not all birds will use a nesting cavity, but those that will do have preferences for the dimensions of the box and the diameter of the entrance hole. Birds instinctively look for nesting cavities and birdhouses that are the appropriate size for their needs, but what determines that best size? If that would to be then the box would squeeze to just 120mm in the inside, when it should be at least 18cm. Whether you are building a birdhouse or choosing a new one to purchase, the right dimensions and sizes can make all the difference for safe, comfortable housing for your backyard birds. Birdhouse Dimensions Chart. Follow the chart below to determine the proper nest box dimensions for each bird species. The boiling water will kill viruses that can be spread between birds. While the right birdhouse measurements are essential, they are not the only factor that will encourage birds to use the house. The Spruce uses cookies to provide you with a great user experience. Not all birds will follow this chart, so don't be surprised if another bird decides to nest in a box you intended for someone else! Home | About Us | Shopping | Follow the chart below to determine the proper nest box dimensions for each bird species. Best Bird Boxes for Different Species. To attract the species you desire you will need to construct your bird house with specific sizes for the box itself, entrance holes and the species desired height placement above ground. Not all birds will use a nesting cavity, but those that will do have preferences for the dimensions of the box and the diameter of the entrance hole. All cuts needed for a bird box marked onto a piece of timber The timber needs to be 150mm mm wide, 15mm thick and preferably hardwood as this withstands the weather much better than softwood. Measurements are given in inches. There are also more specialist boxes with different shape openings such as this one for swifts. Cleaning bird nest boxes. Is this too big or does it give it a better chance of someone living in it? Buy a plank of wood 1500mm long. Jackdaw bird boxes should have a square shape cut out of the front wooden panel, as oppose to the design narrowing to accommodate the opening width.

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