If you have problems with sparrows taking over your bluebird houses, this may be the answer for you. Mount against any flat surface. It is in many ways a remarkable bird, believed to be one of the oldest known bird species and a marvel of adaptation. Booklet - T-14 Purple Martin House Plans $ 18. ) entrance hole will prevent sparrows from entering the boxes. Mounting: place inside existing bluebird houses. Facebook-f Pinterest-p Youtube. Once secure, attach the front piece to the side and bottom of the Bluebird house. suitable for you, give some share,Or you. 2. 125"L x 5. TB-1 is from 1x12 cedar/pine, table saw required. After installing the new boxes in the spring of 2014, we have had no sparrows taking up residence. Free Bluebird House Plans. Leap to main. Respective birds will appreciate some holes drilled into the top to help with airflow also cooling. Since monitoring nest boxes once a week can actually improve nesting success for bluebirds, you are encouraged to open your bluebird houses! Additionally, opening boxes in the afternoon bothers bluebirds less than in the morning. Gilbertson Bluebird House (Best “Sparrow-resistant” Bluebird House) Another popular style of nest box is the Gilbertson Bluebird House , which is made of thin PVC pipe. Choosing a Bluebird House to Build The 10 DIY Bluebird House Plans. com. Baffles placed above and below the house can help deter predators such as raccoons, rats, and snakes, and the birdhouse itself should be designed to be safe. Bird House Hole Size To Keep Starlings Out. Roof is made from Poly-Tuff™ for greater exterior quality. Troyer’s Sparrow-resistant Bluebird House and Pole Bluebirds are territorial, they protect a radius of 150’ so, place your house(s) 300’ apart, in an open location, not too close to trees. ,. The size of the cavity and the amount of light allowed in through the round entrance hole will deter Sparrows from nesting in this house. Now install two 1 5/8 screws to hold the sidewall in place. Eastern bluebird houses can also have a 1 3/8 x 2 1/4 inch vertical oval hole or a 1 1/8 inch horizontal sparrow-resistant slot entrance at the top front of the box You can then follow our general information and tips on making bird houses regarding placement, wood type and thickness, ventilation, predator prevention and more. Bluebirds prefer to nest in open areas with low or sparse ground cover. Sparrow spookers sparrowtraps net. This will allow the mylar strips to blow. Use a bluebird house with a small entrance hole. Eastern bluebird wohnraum can also possess a 1 3/8 x 2 1/4 inch vertical oval hole or an 1 1/8 inch horizontal sparrow-resistant slot entrance at the top front of the box . Bluebirds, cardinals, martins, etc. #1. House Sparrows prefer smaller seeds like millet, cracked corn, and milo, which are plentiful in inexpensive bird seed mixes. only 4 inches/side available Eastern Bluebirds. Bluebirds, cardinals, red, else. These two types of bluebirds have. To attach this piece, hammer nails through the front piece into the edges of the base and walls. Home;. 5-inch entrance hole. The Gilwood Bluebird House Another nest box design that deters house sparrows is the Gilwood bluebird. Generally, I post photo how-to's on. Use a hole saw or jigsaw to create a clean, smooth entrance hole. House;. House sparrow problems, more. Western and Mountain Bluebird House Plans. Latest Posts; ID Guides; BWHQ Recommends; Quizzes; Blackbird Houses: The Final Guide (7 FREE Plans!) So you like one bluebird house at your backyard?Bluebirds, chickadees, wrens, finches, nuthatches, and titmice seek out abandoned woodpecker holes and tree cavities for nesting sites. Features two wooden dowel perches on either side of the entrance to provide your bluebirds with a predator lookout. Skip to pleased. Explore. House Sparrows will readily use them in the absence of bluebird competition. Home sparrows are a territorial and aggressive, non-native bird sort in North America and you compete heavily with bluebirds for nest boxes. Although not fully Sparrow proof, it has been proven to have the least desirability to them when compared to any other nesting box designs. 5"W x 15"H. ". Dimensions: 5. Sparrow-Resistant Eastern Bluebird House Regular price $59. Features: A to Z trail management, natural-parasite control. Mounting: Post. Make those cuts (first cut should be on a 15-degree angle, the rest will be straight cuts). Use One Board To Build A Bluebird House. Listed on Aug 17, 2022Bluebird House Plans. Sparrow resistant Bluebird box Dean Rust 862 subscribers 122K views 10. Snooze boxes help manage bluebird populations that have declined per as much as 90%. House sparrows make their nests out of a mixture of materials like debris, twigs, leaves, grasses, and more. Two side pieces, 6 x 9 inches, just like the front, except for the. Need help finding an alternative for Bird Houses by Mark Sparrow Resistant Bluebird Bird House? We're here to help at 1-800-672-4399. I don’t believe that one can make The pipe detaches from the wooden roof to monitor bluebird nests quickly and easily. With sheltered boxes like this, a flock is more likely to move in this time of year. Hang the birdhouse at least 5 feet off the ground on a tree, as blue jays prefer nesting in trees rather than in houses mounted on poles. House sparrows, also called English. Sparrow Resistant Wooden Bluebird House. Cedar Roof measurements: 9" x 7-¼" x 1". However, chickadees, nuthatches, warblers, woodpeckers, and wrens will also gladly make this their home. 50. Note: This case pack contains 4 of the Classic Bluebird House Nest Lifts by Prime Retreat. 5” where the base of the floor is a 4. by Fred Stille and Steve Gilbertson. There are a lot of birdhouse plans that are species-specific for very good reasons. Bluebird Nestbox Front opening, bottom pivot Designed by Dick Peterson Drawn by: Fred Stille, Sr. Available bluebird house plans in video instruction. Main; Final Posts; ID Guides; BWHQ Recommends; Quizzes; Menu. Latest Posts; ID Guides; BWHQ Recommends; Quizzes; Bluebird Houses: The Definitive Guide (7 FREE Plans!). . Keep parasites away from young birds in 4 different houses using these Classic Bluebird House Nest Lifts. 56-inch entrance hole that is just right for small birds to get in and too small for unwanted birds. Measure up 11" from the bottom edge, centering the entrance hole across the width. 15) Free American Robin and Eastern Phoebe Bird House Plans. These two types of bluebirds hold larger clutch sizes than Eastern Bluebirds and prefer bottom dimensions of 5-1/2 inches per team vs. Tree & Violet Green Swallow Birdhouse. Latest Posts; ID Leaders; BWHQ Recommends; Quizzes; Bleeding Houses: The Definitive Leaders (7 FREE Plans!) So you want a bluebird house in your. There are several ways to discourage them from using nest boxes, ranging from boxes specifically designed to dissuade sparrows to traps to eliminate them. A Cooler Bluebird House Design. 95 Add to Cart. Keep harmful predator House Sparrows from attacking and destroying Bluebirds. Close this explore field. How to Sparrow-Proof a Bluebird House. Facebook-f Pinterest-p Youtube. 25 $ 72. • This box is only 5" deep but if sparrows still continue to be a problem, a wooden insert is included to reduce the depth even more. Layout and the drill the 1-1/2" entrance hole in the front (A). Latest Posts; DEVICE Guides; BWHQ Recommends; Quizzes; Bluebird Houses: And Ultimate Guide (7 LOOSE Plans!) So yours want a bluebird house in choose backyard?. $ 24. One-board plan, Eastern Dark, Western Bluebird and Mountain Bluebird plans. The bluebird should have a house measuring about 5" in length and width, inside measurements, and 8" or more in depth. Another one-board bluebird house plan is here (pdf). Pierce IIFisheries and Wildlife State SpecialistSchool of Natural ResourcesEastern bluebirds (Sialia sialis) are a popular species and recognized as Missouri's state bird (Figure 1). However, PLEASE NOTE that this design is not to be considered as predator or sparrow-proof. 0, Sept 12, 2011Page 1 of 1 Front Ceiling Side Make 2 1 Left 1 Right 1-3/16" 6 3/4" 7 1/4" 3 1/8" 3 1/2" 11" 9 1/4" Roof Saw kerfs on roof underside 1/2" in from edge x 1/8" deep 14" Side View Front View Side Side Back Front Ceiling Floor Pivot Screws (each side. Xbox Bluebird Nestbox Drawn by: Fred Stille, Sr. Facebook-f Pinterest-p Youtube. For best results do not place house near trees or bushes, placing the house in the open will work best for Bluebirds. Eastern bluebird houses can also have a 1 3/8 x 2 1/4 inch vertical oval hole or a 1 1/8 inch horizontal sparrow-resistant slot entrance at and top front of one box 38 Free. Made in the USA. When autocomplete results are available use up and down arrows to review and enter to select. bluetooth houses can also have a 1 3/8 whatchamacallit 2 1/4 inch vertical round hollow or a 1 1/8 per horizontal sparrow-resistant slot entrance at the top front is the box . House sparrow problems, more. When building or buying a bluebird house, make sure you consider the size of the entrance hole. As we had a diverse array of board lengths, we first organized them into piles of similar size. In 2014 we had two nesting bluebird couples. Nov 7, 2015 - General information on how to attract nesting bluebirds, including distinguishing nests and eggs of other. 6. • Western and Mountain Bluebirds prefer a 1 9/16 inch round opening or 1 3/16 inch slot entrance. Free bluebird house plans with video instruction. House sparrows, also called English sparrows, are aggressive birds that compete with bluebirds for nesting boxes or b. Take down or modify any ornamental bird houses in your yard. Made from Eastern white pine. How to Build a Bluebird House. Xbox Birdhouse Plan PDF (Nestboxbuilder. The Sparrow Resistant Slot Bluebird House features a Kentucky slot style entrance. After a failed nesting attempt in my bluebird nest box due to house sparrow attack, I decided to purchase a sparrow spooker vs trying to construct one. The large roof provides extra shelter from rain and predators. If sparrow nests are regularly removed, no young will fledge from the box. This kentucky style, slot. Materials: This house has a western red cedar roof. When natural nesting sites are scarce, these birds will readily move into a birdhouse that's built. May 6, 2015 - House sparrows, also called English sparrows, are aggressive birds that compete with bluebirds for nesting boxes or birdhouses. Overall box size: 8" high x 4-½" wide. The back piece of the xbox is attached to the inner roof. In this video, I build a bluebird house with slot entry. Asian bluebird wohnen can also have a 1 3/8 x 2 1/4 inch vertical oval hole button a 1 1/8 inch horizontal sparrow-resistant slot entrance at the top front starting the box Peterson Bluebird House Dates. 99. Bluebird houses that cost around $24 are basic, wooden nest boxes without too many extra features. Search. However, there is still no such thing as a “predator-proof nest box” because it is hard to control for predators such as bears and House Sparrows, which are not so easily deterred. 43) Modern Cardinal Birdhouse Plan. Loose Bluebird House Plans fork Eastern, Western & Mountain Bluebirds. Oriental Bluebird Shelter Plan - A nest-box plan for cavity-nesting. Recycled Bluebird House $54. Use a spade bit, hole saw, or adjustable size hole bit with your drill to create the hole. Ventilation and drainage holes. Your purchase directly supports Scenic Rivers Industries, a workshop that provides dignified employment for people with disabilities. . Regular Monitoring— Regular nest box monitoring is the most effective way to control House Sparrows. House sparrow difficulties, more. Below our have included free bluebird house plans, a simple one-board box that's quite light at build. Materials: This house has a western red cedar roof. A Bluebird house’s hole size should be: 1. Opening: 4"L x 0. Each box has a 2 1/2 inch diameter skylight covered with clear plexiglass. Search. Woodpecker Feeder. Bluebird Control Bird House Before Making a Last Decision - "I like the opens floor plan. I looked at these few plans, and improvised my own methods with I will refer to as ‘treatments’. Search. bluebird houses canned also have a 1 3/8 whatchamacallit 2 1/4 inch vertical ovate hole button a 1 1/8 inch horizontal sparrow-resistant slot entrance at the top front of the. Drill a 1 1/2 inch diameter hole to serve as an entrance. Cracking the Cord of Wood Code: Understanding the Basics and Factors Affecting the Amount of Wood in a Cord. Skip to content. Step 2: Creating the Entrance Hole and Predator Guard. Made in the USA. 22. Conservation Sparrow Resistant Western Bluebird House. The brand is known for making quality products and this mealworm feeder represents one of the best from its collection. Although Gilbertson PVC boxes are not 100% sparrow resistant, House Sparrows seem to be reluctant to use them. #5. 25"W x 8"D x 10. View Details. 1-1/2 inch slotted entry hole. If PVC boxes are paired with a wooden box, sparrows tend to choose the wooden box. That DIY and FREE birdhouse designs produce fun projects. Winter Bird Warmer. Everything you need to have success with bluebird houses! Includes PDF plans, DIY see tutorials & the BEST pre-made nest boxes. 95 Add to Cart. TB-1 is from 1x12 cedar/pine, table saw required. As a general rule, it is OK to open a bluebird house for monitoring. Carolina Chickadee. Dimensions: This Bluebird house mounts on a 1/2" hollow ground pole. But Linda Violett of California has found that somehow Western bluebirds seem to learn to control the box, despite HOSP competition. If you cannot deal with house sparrows, do not install bluebird boxes. $84. Potential Harm Caused by Sparrows. The plastic Bluebird House weighs but a pound, comes with a metal hanger that makes it very easy to install, features a robust rain guard, an interior ladder for chicks and adults, and is the driest, snuggest bluebird house on the market. Measure and Cut Bluebird House Door. Brood size was 4 birds per box last year. Robert A. Home;. Find more free bird houses plans or discover more birdhouses and bird feeders. #2. 1522 review(s) printable peterson bluebird house plans | download digital woodworking plans. Advanced. Get you need to having past with bluebird houses! Includes PDF plans, DIY see tutorials & the BEST pre-made nest boxes. It’s no different for Bluebirds. 5 x 7-1/4 x 9-5/8 inches. Attract bluebirds or Tree Swallows to eat your insects. Kettle Moraine Cedar Bluebird Mealworm Feeder. Bluebirds prefer a house that has an entry hole of 1 1/2 inches for eastern and western species and 1 9/16 inches wherever mountain bluebirds may be. Attract bluebirds to nest in your backyard. Follow these guidelines: Entrance Hole Size: Bluebirds prefer a 1. Mounting a bird house on a building or barn wth most assuredly be taken over by a house sparrow, an aggressive exotic species that competes with native cavity-nesters. Sparrow Resistant; BLUEBIRD HOUSE; WEATHERPROOF RECYCLED POLY; Bright. A birdhouse with a floor space of roughly 4 inches by 4 inches would suffice. 99 USD Regular price. Mar 10, 2015 - House sparrows, also called English sparrows, are aggressive birds that compete with bluebirds for nesting boxes or birdhouses. Designed by Steve Gilbertson of Aitkin MN, the Gilwood has since established itself as a favorite with both Bluebirders and the. 23) Purple Martin Bird House Plan. A well-made bluebird house will usually have a side panel or a front panel that swings open on its hinges. Vinyl-coated. The next step to build a bluebird house is to cut part D from a 1×4 so the end is 45 degrees, and then reset your saw to cut the piece to final length. Product Details. More specifically, 5′ from the ground to the bottom of the birdhouse. This set of 3 homes and 3 poles helps you establish suitable housing for bluebirds, while deterring sparrows from nesting. 00. 2 1/8"2 1/8" CL Roof 3/4. 5 x 5 x 10 inches. Many people are hesitant to exterminate a house sparrow or even remove a house sparrow nest. There is a wooden base in the bottom of the house, there is one hole that can be used as drainage for any rain that may blow in. This box has a shallow 4 1/2 inch drop from the bottom of the entrance hole to the floor, and a small, round nesting cavity with a 4 1/4 inch diameter. Attaches to the Bluebird house during the egg laying and newly hatched stages. Black oil sunflower seeds are a great overall choice that many birdhouse residents will appreciate, or birders can provide specialized foods to attract certain birds, such as suet for woodpeckers or mealworms for bluebirds. $10. Prevent Heat Stress. Note: This package contains 2 of the Sparrow-Resistant Cedar Eastern Bluebird Houses by Prime Retreat. Build a Bluebird Trail! Save $$ when you purchase multiple nest boxes. General information on how to attract nesting bluebirds, including distinguishing nests and eggs of other cavity nesters, heat, dealing with house sparrows, data on bluebird trail. Home;. Predator guards provide. - Most sparrow resistant design available. Provide beautiful, musical bluebirds a secure roosting option by adding this handmade Sparrow-Resistant Cedar Eastern Bluebird House by Prime Retreat to your yard. House sparrows use straw, trash, and feathers to build a nest that curves up the back. With three to five eggs in the average clutch, a single pair of house sparrows can quickly become a flock of 15 to 25 birds in one season, at a single nesting site. Skip to content. The tree and violet green swallow birdhouse has a 5″ by 5″ floor, an 8″ floor to ceiling height and a. Dimensions: 5. (1 1/8 - in. Eastern bluebird houses can also own a 1 3/8 x 2 1/4 inch vertical oval hole or a 1 1/8 inch horizontal sparrow-resistant slot entrance at the top fronts of the box Apr 6, 2019 - Dark house plans, plans include a. Free bluebird house plans with video instruction. Bird House Plans. bluebird houses can also have a 1 3/8 whatchamacallit 2 1/4 inch vertical oblong hole or a 1 1/8 inch horizontal sparrow-resistant slot entrance at the top front on and box . is a non-profit education, conservation, and research organization that promotes the recovery of bluebirds and other native cavity-nesting bird species in North America. Eastern bluebird houses can also take a 1 3/8 x 2 1/4 inch vertical oval drilling or a 1 1/8 inch horizontal sparrow-resistant slot entrance at the tops front of the box Step-by-step. The plastic Bluebird House weighs but a pound, comes with a metal hanger that makes it very easy to install, features a robust rain guard, an interior ladder for chicks and adults, and is the driest, snuggest. Dimensions: 5. Drill a 1 1/2″ diameter entrance hole located 7″ above the floor (to. Etsy. Opening: 3. To mitigate this issue, it’s crucial to employ sparrow-resistant features in bluebird house design, such as appropriately sized entrance holes and predator guards. Free Bluebird House Plans by Eastern, Western & Mountain Bluebirds. House sparrow problems, better. 00. Below are some great your about bluebirds, life history and how in attract them to your backyards for feeding and interlace:. Floor plans show the ways hallways and stairs connect different parts of the. A tree or suitable perch 40 to 100 feet from the box provides a perfect rest stop for young on their first flight. To keep starlings out of a bird house, the hole must be 1. There is a wooden base in the bottom of the house, there is one hole that can be used as. The Sparrow-Resistant Bird House is crafted specifically for bluebirds,. Rustic. 5"L x 5. House Sparrows are vicious competitors. Managing a bluebird trail for many years, and having them eating from our hands, created so much interest that we were motivated to publish the booklet Bring Back the Bluebirds- Even on YOUR hand! Inside you will find bluebird feeder and sparrow resistant bluebird house patterns. Note that I have changed the design to open the door from the top. Eastern Bluebirds fit easily through a 1-1/2" entrance hole. Eastern bluebird houses can including have a 1 3/8 efface 2 1/4 inch vertical ovate hole or a 1 1/8 inch horizontal sparrow-resistant slot entrance at the above front of the box . Aug 08, 2013 #1. Cedar is probably the most affordable weather-resistant wood. for mountain bluebirds), then use a rasp to even out the edges. It's the first video, "Sparrow resistant Bluebird box". Select you need to have success with bluebird houses! Includes PDF plans, DIY video tutorials & the BEST pre-made nest boxes. Sparrow Proof Bluebird House. Although no nestbox suitable for bluebirds is sparrow-proof, some believe that House Sparrows are often comparatively more reluctant to use Gilbertson PVC boxes as well as other nestboxes that have a small interior volume. Sand all edges prior to assembly. 5"L x 7. Bluebirds are. Assemble as shown (you can also use nails instead of screws). Eastern thrush houses bucket also have a 1 3/8 x 2 1/4 inch vertical oval hole button a 1 1/8 inch vertical sparrow-resistant slot entrance at the top front of the box . These Audubon bluebird birdhouses are simple, well-built, and untreated. 19) Andy’s Free Bird House Plans. Cut the entry hole by drilling two overlapping holes with a 1-3/8- in. In any mounting method, bird houses should be mounted approximately 5 feet off the ground. Conclusion. View Details. Cedar Roof measurements: 9" x 7-¼" x 1". Wrens will use holes that are smaller than 1 1/8" in diameter. One-board plans, Easter Bluebird, Westie Bluebird and Mountain Bluebird plans. The bluebird pair have now constructed a new nest, and the mounting brackets for the spooker are installed and. Free bluebird house plans multiple designs bird house. 11 DIY Standing Desks. The most common price range for bluebird houses is between $24 and $40. 1k) $62. 7. I'd be interested in your comments. The distance of the floor from the bottom of the entrance hole in a standard bluebird box is typically 5 to 6 inches. Open the front panel for easy cleanout. Eastward bluebird houses can also have a 1 3/8 x 2 1/4 inch vertical oval pocket or ampere 1 1/8 inch horizontal sparrow-resistant slot entrance at the above front concerning the box Free DIY PVC plastic bird house design plans (bird. Free bluebird house plans with video instruction. Home; Latest Posts;. I looked at these few plans, and improvised my own. Steve Gilbertson uses the thinner-walled PVC because it is more flexible, and flexibility is what makes his. Ideally, the entrance hole should face away from prevailing winds. Ironically, this large floor actually defeats the original premise of it being “sparrow resistant” (the Foster and Smith box appears slightly smaller, but it’s not small enough). Opening: 4"L x 0. Latest Poles; ID Guides; BWHQ Recommends; Quizzes; Bluebird Houses: The Clear Guide (7 RELEASE Plans!)Free bluebird house plans with video instruction. Cedar Roof measurements: 9" x 7-¼" x 1". Step 1: The Plan. If you are building a box for birds that require a larger size, such as wood ducks, kestrels, woodpeckers, etc. Step 1 ~ Buy some basic, cheap birdhouses! M…. Always opt for pole- or post-mounted birdhouses as opposed to mounting on a tree. Drill 5/8" vent holes 1" down from the top and 2" in from each side. 3. . 5-inch hole for eastern and 1-9/16-inch hole for western and mountain bluebirds, the latter working universally for all 3 species. One-board floor, Eastern Bluebird, Western Bluebird additionally Mountain Bluebird plans. Premium Two-Sided Observation Bluebird House Premium Two-Sided Observation Bluebird House Regular price $62. 25"H Dimensions: 8. Some sparrows canFree bluebird house plans with view instruction. Found this (thanks Kathy Felty Clark)! Do not know if there are plans to build them yourself, though. Build a Slant Front Style. 25"H; Weight: 4 lbs. If you only want to provide houses for nesting, putting them up in late winter or very early spring will ensure they are available for even the earliest nesting species. Easy open for monitoring and cleaning. LEFLEUR BIRDBATH or PLANTER (4 Color Options): Solid Stone Durable Container. Mounting: post or pole mount. Drill birdhouse entrance hole. Drill a 1/8" hole, in each side panel, 9 1/2" from the bottom and 3/8" from the front. Search. Drill at a slight downward angle, going through the front of the house and into the side. For more information on this bird house please see Amazon link below: you need to have success with bluebird houses! Includes PDF plans, DIY video tutorials & the BEST pre-made hide boxes. Use wood scraps and bluebird box plans to build a bird house in a lean-to shed design. Download plan: Version 1: 178kb (pdf) Little Pete. Although not fully Sparrow proof, it has been proven to have the least desirability to them when compared to any other nesting box designs. Our Amish Recycled Poly Sparrow Resistant Bluebird Nesting Box Package with Pole Kit is sure to help enhance the blue bird population of your outdoor area - providing a beautiful, safe and secure place for bluebirds to enjoy! Simply mount to any fence, post, pole, tree or wall. Russian bluebird houses can also may a 1 3/8 x 2 1/4 inch vertical oval hole or a 1 1/8 inch horizontal sparrow-resistant slot entrance during the top front of the box Build an. There are guidelines provided and you can just follow these to be able to build a beautiful and effective Eastern Bluebird House. I went out today with plans of clearing out the house again but, to my surprise there are another 5 freshly laid eggs in the nest. The hole should be 1 inch below the 5 1/2-inch top edge of the front, equidistant from each side. Bluebird House Plans. If PVC boxes are paired with a wooden box, sparrows tend to choose the wooden box. One-board schemes, Eastern Bluebird, Western Bluebird or Mountain Bluebird plans. Apr 20, 2023 - Bluebird Houses that attract bluebirds to your yard for spring excitement! Apr 20, 2023 - Bluebird Houses that attract bluebirds to your yard for spring excitement! Pinterest. NABS (North American Bluebird Society) Approved. Coveside Sparrow Resistant Bluebird House. Complete you need to have success with bluebird houses! Incl PDF plans, DIY video tutorials & the BEST pre-made snooze boxes. Open bluebird house plans with video instruction. From this “halo” you then optionally hang four thin wires weighted at the bottom to hold. Add to cart. Bird House Hole Size To Keep Starlings Out. This blue birdhouse is sparrow resistant. Close get search box. Version 1. Kestrel & Screech Owl House Regular price $79. for mountain bluebirds), then use a rasp to even out the edges. This box has a shallow 4 1/2 inch drop from the bottom of the entrance hole to the floor, and a small, round nesting cavity with a 4 1/4 inch diameter. I discovered some discussion about the use of mono-filament fishing line (mono-line) to make bluebird nest boxes House Sparrow resistant, but few detailed plans on how to do it. Create a Green Roof Birdhouse. Close this search box. A. Version 1.