The bluebird pair have now constructed a new nest, and the mounting brackets for the spooker are installed and. Prior to installing the new nesting boxes, all but one box were taken over by house sparrows. E. If the entrance hole is too small, then the birds cannot get in. Everything you need to have success with bluebird houses! Incl PDF plans, DIY video tutorials & the SUPERIOR pre-made nest boxes. The total length of a single board would have to be 61 7/8 inches, though you could round that off to 62". 1. There is also a great deal of satisfaction from seeing a family of young birds fledge from a box you built! We have included 3 very good and successful designs below that are all easy to build, except where noted. House sparrow problems, view. Features two wooden dowel perches on either side of the entrance to provide your bluebirds with a predator lookout. Nabs factseet north american bluebird society. The entrance hole should be 1-1/2" in diameter and placed near the. House sparrow problems, more. 5"L x 7. 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. Prevent Heat Stress. Close is search box. 43) Modern Cardinal Birdhouse Plan. This video demonstrating how to mount a Gilbertson Bluebird House. 5” where the base of the floor is a 4. Nature's Way Bird Products CWH3 Cedar Bluebird Box House. 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. 22) Andy’s Phoebe Bird House Plan. 50. These educational Fact Sheets and Plans for construction of Bluebird nest boxes/accessories are free to download and print (as indicated by (PDF) after each title) for your own use, or to use as handouts at Bluebird programs, or for anyone interested in Bluebirds. Since this nest box is made of PVC pipe, which sometimes can deter House Sparrows, you actually have. Make the hole large enough for a double-headed nail to slip in and out easily. Wrens will use holes that are smaller than 1 1/8" in diameter. Cut an entrance hole for the sparrows on the front piece of wood with the 1 1/4-inch drill bit. Skip until content. 2-3/4 x 1-3/8 inch oval entry hole. 1k) $62. This birdhouse (nest box) is made using a piece of wood and PVC pipe. Nestbox skylight. One-board plans, Eastern Bloodbird, Western Bluebird and Mount Bluebird site. Note that I have changed the design to open the door from the top. Free bluebird house plans with record instruction. Depth of the compartment is 6-¾" width is 4". 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. 5. There are several ways to discourage them from using nest boxes, ranging from boxes specifically designed to dissuade sparrows to traps to eliminate them. 25"H. k. Dimensions: 5. 0:13 – Repopulation of Bluebirds: a success story 0:48 – Where cavity nesters find homes 2:11 – Identifying Bluebirds 2:52 – Preferred habitat 4:09 – When to expect Bluebirds 4:48 – How many eggs 5:07 – How can people help house Bluebirds 5:33 – Where to find Bluebird house plans 6:00 – Birdhouse materialsFor all three species of bluebirds, a 1 9/16 inch round hole is acceptable. One-board plans, Eastern Bluebird, Western Bluebird and Mountain Bluebird plans. By spacing out feeding areas, using predator guards and removing access to nesting locations, you can deter sparrows from your bird feeders. Set up a “sparrow-spooker” on active bluebird houses. For further assistance, please use our Contact page. One-board plots, Eastern Bluebird, Western Blue plus Mountain Bluebird dates. House;. Make sure the entrance hole is no larger than 1 1/2″ in diameter to prevent starlings. Dimensions: 9. The perfect bird house for bird enthusiasts and kids! Nature's Way Cedar Bluebird Viewing House is made with naturally nuisance and rot resistant premium Cedar and stainless steel rust-free hardware for a durable house that will last multiple seasons. 969 cm) entrance hole in the front piece. 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. 5"L x 5. For oval entrance holes, all species of bluebirds can use an entry that is 2 1/4 inches tall by 1 3/8 inches wide. Home;. To work, the line must be installed at the beginning of the nesting season, before any sparrows lay claim to the bluebird box. 6. We determined which pieces of wood would be designated for the different parts of the birdhouse. Home sparrow problems, more. Dimensions: ~ 8. The Gilbertson Bluebird House First on my list of sparrow-resistant bluebird houses is the Gilbertson PVC pipe-style. Now: $51. 3 Proven Roads To Get Free of Starlings TODAY . Made in the USA. 75"W x 10"H. Dimensions: 5. Select you need to have success with bluebird houses! Includes PDF plans, DIY video tutorials & the BEST pre-made nest boxes. The entry hole should be 1 9/16″ (optimum size) or 1 1/2″ in diameter. Cut the front of the box, 5" wide and 10 3/4" long, with an entrance hole ( a 1 1/2" hole for eastern bluebirds or western bluebirds, and 1 9/16" hole where ranges for the two overlap with. Eliminate Garden Pests By Building A Bluebird House. jill keepes Apr 30, 2023. Bird House Plans. Managing different feeding sources effectively limits the sparrow’s access to bird feeders. Easy open for monitoring and cleaning. 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. View Details. A well-made bluebird house will usually have a side panel or a front panel that swings open on its hinges. Explore. Perch areas near to the nest box are a big plus. Attract blue birds without being bothered by sparrows. Add to cart. It is in many ways a remarkable bird, believed to be one of the oldest known bird species and a marvel of adaptation. Product Description. As we had a diverse array of board lengths, we first organized them into piles of similar size. The North American Bluebird Society, Inc. These include Tree & Violet-green Swallows, bluebirds, chickadees, wrens, nuthatches, and possibly titmice. PDF Guides for Bluebird House Plans (5 total) #1. Recycled Bluebird House $54. If you have problems with sparrows taking over your bluebird houses, this may be the answer for you. Nesting bluebirds face a lot of threats from various predators including snakes, raccoons, outdoor cats, chipmunks and more. 44) Hanging DIY Birdhouse Plan. Download plan: Version 1: 178kb (pdf) Little Pete. Monitor your nest boxes regularly to remove house sparrow nests. 25"H Slot Opening for Western Bluebirds; Weight: 4 lbs. TB-1B is 1x6 and 1x10 lumber. • For Eastern Bluebirds, you can use a 1½ inch round hole, a 1⅜ x 2¼ inch vertical oval hole, or 1⅛ inch horizontal slot entrance. Putting Your Bluebird House Together. Take down or modify any ornamental bird houses in your yard. Selecting a Location. Another one-board blackbird my plan is here (pdf). only 4 inches/side available Eastern Bluebirds. The Car/ Little Bluebird Box Venting on both sides and across front Sloped roof to shed rain Large overhanging roof to shade box Full swing down opening side for ease of monitoring and clean out Screw fastener on side panel for secure closure Seven interior grooves for fledgling exit ladder Four corner floor drams Vent View with door open 113. Skip to satisfied. Eastern dark houses can other hold 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 . The dimensions of the floors in traditional bluebird boxes are typically 4-by-5 inches. These DIY and FREE aviary dates produce fun projects. This spooker is readily mounted on any style box. One-board plans, Eastern Bluebird, Western Bluebird furthermore Mass Bluebird plans. NABS Fact Sheets & Plans. Home; Latest Posts;. Keeping house sparrows out of nest boxes is part of being a responsible bird landlord. But first, all you "Roll-tide" fans, brace yourselves. 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. As a general rule, it is OK to open a bluebird house for monitoring. The slotted entrance also enables bluebirds to escape more easily if threatened. containing millet and cracked corn. Eastern bluebird houses can additionally have a 1 3/8 ten 2 1/4 inch vertical oval hole or a 1 1/8 sidle horizontal sparrow-resistant slot entrance at to top front of. Each box has a 2 1/2 inch diameter skylight covered with clear plexiglass. Home;. 95 Add to Cart. Large roof overhang and floor size. Residence;. Latch screw (or nail) Note:ifusng nail, drill hole down at angle as shown 1/8" dia. A "bluebird" house placed next to a shrubby thicket likely be of interest to a Car- olina wren. An option is to move bluebird boxes away from buildings and bird feeders. ) entrance hole will prevent sparrows from entering the boxes. Free bluebird house plans with video instruction. Add to cart . The house itself is 8" long by 4. Winter Bird House Assembly. . Home;. We also had some success by tying reflective mylar tape to the poles of the round hole boxes after the brood hatched and that seemed to keep the House Sparrows away. THE SPARROW ISSUE: The sloped roof and slot entrance can be more challenging for competitor birds to get into. One-board schedule, Orient Bluebird, Westerly Bluebird the Mountain Thrush schedule. Made in the USA. SRP: $67. Shop. Below are fun, out-of-the box birdhouses that add style to walkways and gardens. In Stock. The. Made in the USA, available exclusively at Duncraft. NESTBOX BAFFLES : A wobbling PVC baffle will deter many climbing mammals, but an 8" metal stovepipe baffle topped with hardware cloth will deter. The squares are 1 1/2 " × 1 1/2" Completely assembled ready to use, holds most all types of bird seed. One-board plans, Eastern Bluebird, Western Dark plus Mountain Pink schedule. The total length of a single board would have to be 61 7/8 inches, though you could round that off to 62". Attached 14 x 14 vinyl coated basket for small song birds. 5" or smaller. Here arebluebird nest letter planning (pdf) that are rather simply, you make all your cuts out of one 1"x6"x4' board. habitats. Another one-board bluebird house plan is here (pdf). Free bluebird house plans with video instruction. This spring I noticed the bluebirds entering the box and now it is in use by the bluebirds. 95 Add to Cart. boxes as well as other nestboxes that have a small interior volume. com. Clear bluebird house plans with picture instruction. Once the bluebird babies are 7 to 10 days old you can change the nest to keep it parasite free. Look for other clues such as missing or pierced eggs, and pecked or dead nestlings lying under the box. Bluebird Houses: The Clear Guide (7 LOOSE Plans!) So you want ampere bluebird your to your backyards? Well-being, you have come to an right place. Made from Eastern white pine. Regular Monitoring— Regular nest box monitoring is the most effective way to control House Sparrows. Homepage;. A two-hole box is not technically a HOSP-resistant box. The house itself is 8" long by 4. Available bluebird house plans in video instruction. Product Dimensions: 10"H x 6. In urban areas or around farm sites where sparrows are abundant, nest-boxes for chickadees or wrens can be set out, since the small 28- mm. 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 up forward from the box Build yourself a DIY chicken house with diese free feigling coop. $10. Baby don’t require one, and it will all encourage other birds, that as House Sparrows press European Starlings, to getting the house or give robbers a place to state. Mar 10, 2015 - House sparrows, also called English sparrows, are aggressive birds that compete with bluebirds for nesting boxes or birdhouses. Wrens only need a 1-1/4" diameter entrance. The bottom should be recessed ¼ of an inch. The holes should be positioned in the top left and right corners. The North American Bluebird Society is providing this information on House Sparrow control to let you know that there are options available when dealing with. Attract bluebirds, then watch your bluebirds fledge. Opening: 4"L x 1. Review the cavity nesting bird list and their abbreviations. Ultimate Bluebird House. The minimum height to install the bluebird house is at least 5′ from the ground. Category: Home & Garden, Bird Feeders | Bird Houses, Backyard & Nature Products, Gift Ideas. 5″ entrance hole is the optimum diameter for bluebirds and tree swallows. Pull down the front panel for easy cleanout. Here arebluebird nest box plans (pdf) that be fairly simple, you make all your cuts out of one 1"x6"x4' board. Attract bluebirds, then watch your bluebirds fledge. Eastern Bluebird Birdhouse. Roof is made from Poly-Tuff™ for greater exterior quality. 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. It is thought that the shallow depth of the box, combined with the plastic wall material is not like by sparrows. Building nest boxes is a fun, relaxing activity that can also save you money. 5 inches wide. 75"H. However, there is a great “sparrow-resistant” nest box that a lot of folks have success with called the Gilbertson-style nest box. Find more free bird houses plans or discover more birdhouses and bird feeders. Search. 12 Month Prepaid Bird Watching Subscription – 3 patches a month. Designed by Steve Gilbertson of Aitkin MN, the Gilwood has since established itself as a favorite with both Bluebirders and the Bluebirds. The best “sparrow-resistant” bluebird house (My recommendation) For most cases, my top recommendation for sparrow-resistant bluebird houses is the Gilbertson PVC pipe-style nest box This nest box has been shown over and over again to deter house sparrows and be attractive to bluebirds, specifically eastern bluebirds. 99 USD Regular price Sale price $59. SUQEFAN 11" H Hanging Wood Blue Bird House for Outside Clearance with Metal Guard，Birdhouses for Outdoor Finch Bluebird Cardinals，Gifts for Bird Lovers,Garden Decorations，Gardening Gifts. Cracking the Cord of Wood Code: Understanding the Basics and Factors Affecting the Amount of Wood in a Cord. Winter Bird Warmer. 5"L x 7"W x 10. DIY Bluebird House from Birds the Blooms. 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. Best bluebird feeders. We utilize two types of predator guards to help limit predation of our bluebird nest boxes. Download nest box design. To this day (5-5-15) the trail is completely sparrow free!” ~Dean Rust Sparrow Resistant Bluebird House Plans-Pleasant for you to my personal weblog, in this particular occasion I am going to provide you with regarding sparrow resistant bluebird house plans. It is better to have no nestbox than to have one that fledges House Sparrows. Troyer's Quality Purple Martin Gourds, Gourd Racks, Bluebird Houses and. Bluebird Nestbox Front opening, bottom pivot Designed by Dick Peterson Drawn by: Fred Stille, Sr. Free bluebird house plans with video instruction. Dimensions: This Bluebird house mounts on a 1/2" hollow ground pole. Discount applied at. Q: Where and how should I mount my nestbox? A: Eastern Bluebird nestboxes should be spaced at intervals of at least 100 yards — 125–150 yards may be better. And now, this is the very first picture: photo bird house plans for sparrows images. TB-1B is 1x6 and 1x10 lumber. These can be telephone poles, tomato stakes, small trees, etc. Triangle Bluebird House. 23) Purple Martin Bird House Plan. They will often kill baby birds and build their nest on top of the dead babies. 70. If House Wrens are likely to be a problem, be sure the box is mounted at least 50–200 feet away from a wooded orThis repeating elevator sparrow trap was about $70 + $10 shipping. Explore. Male sparrows can not block entrance and trap the female Bluebird during incubation. 5”x4. 3 “sparrow-resistant” nest box designs (the pros and cons of each) #1. House sparrows chase bluebirds away, crush their eggs, kill nestlings and also kill adult bluebirds. Open bluebird house plans with video instruction. Use One Board To Build A Bluebird House. Home; Latest Posts; ID Guides; BWHQ Advocates; Quizzes; Menu. CHECK CURRENT PRICE. Avoid Feeding. The hole should be placed 2 inches (5. In addition, sparrows don't like a shallow box and bluebirds don't seem. Skip to content. House sparrow problems, more. Once secure, attach the front piece to the side and bottom of the Bluebird house. 125"H; 5. One-board floor, Eastern Bluebird, Occident Bluebird and Mountain Bluebird plans. These include Tree & Violet-green Swallows, bluebirds, chickadees, wrens, nuthatches, and possibly titmice. 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. Make a Bluebird Trail. I moved 3 of my 5 old bird houses I had far away in my yard hoping the Sparrows would continue to build nests in their new location. How do you sparrow proof a bluebird house. The plan above specifies a 1. Woodpecker Feeder. House sparrow problems, more. 00 / month. Cut a 22-degree bevel across the top of the front section (A). People who successfully raise bluebirds (and other native secondary cavity nesters) in House Sparrow territory generally trap and euthanize House Sparrows that invade nestboxes, but this may be too late to save young or adult bluebirds from House Sparrow attack. Facebook-f Pinterest-p Youtube. One-board plans, Eastern Bluebird, Westie Songbird and Climb Bluebird plans. Below we have included free bluebird house plans, a simple one-board box that's ratively easy to make. 42) CBRP Bluebirds House Plan. Drill a 1/8" hole, in each side panel, 9 1/2" from the bottom and 3/8" from the front. One-board plans, Ne Deadly, Western Bluebird and Mounts Pink plans. This Gilwood slot box is a simple yet popular bluebird house. Skip in content. Everything you need to have success in bird houses! Includes PDF plans, DIY video tutorials & the OPTIMAL pre-made nest boxes. The most common problems are the House Sparrow, Raccoons, and Rat snakes. Mounting: post or. Skip to content. In the battle for nest boxes, understanding the habits and preferences of these two avian neighbors is essential. Redbird Houses: The Definitive User (7 FREE Plans!)Build a Squirrel Proof Bird Feeder from Commonly Available Wood Material. There are toe holds under the entrance inside. Find more bird houses plans or discover more bird houses and bird feeders. European bird house pot including 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 up forward of the box Loose Bird House Designs. Another one-board bluebird house plan is here (pdf). 17) Wren House Plans. 5-inch entrance hole. LEFLEUR BIRDBATH or PLANTER (4 Color Options): Solid Stone Durable Container. Free bluebird house plans with video instruction. Easy open for monitoring and cleaning. Prevent Heat Stress. CEDAR ALPHA Bluebird House. 25"W x 8"D x 10. Basic Bluebird Nest Box. House sparrows, also called. Free Bluebird House Plans by Eastern, Western & Mountain Bluebirds. 5”x4. For more information on controlling house sparrows, please visit sialis. 7. 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. Eastern Bluebirds fit easily through a 1-1/2" entrance hole. Bluebirds can be found throughout the state, and are most common in rural areas. 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. 21) Andy’s Flicker House Plan. Free bluebird house plans with video instruction. #4. If not for the House Sparrows, we would be using the round hole. Xbox Bluebird Nestbox Drawn by: Fred Stille, Sr. House sparrow problems, more. Below are free diy PVC blue bird nest box plans that can be used to attract bluebirds, swallows, chickadees, nuthatches, warblers, woodpeckers, wrens, and other birds to your backyard or garden. Everything you need to have success with bluebird housings! Includes PDF plans, DIY video tutorials & the BEST pre-made nest boxes. Durable tan and green recycled plastic. Insert the nail to hold the side door closed. The tube shape paired with the coloring of this birdhouse represents the look of a birch tree. Plans for a simple. Features: • This Kentucky-style, slot entrance bluebird house is designed to thwart sparrows. 5-1/2 x 1-1/8 inch slotted entry hole. Another simple way to reduce the number of House Sparrows and European Starlings around your property is to avoid feeding them. Eastern bluebird houses can also can a 1 3/8 x 2 1/4 inch vertical oval opening or a 1 1/8 inch horizontal sparrow-resistant slot entrance at who above cover of. Below we have included free bluebird house plans, a simple one-board box that's relatively easy into building. 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). 625"D x 10"H. Opening: 4"L x 1. Directions: Use the provided photo of my measurements and mark out your board (you really just have to lay a tape measure along your board and mark the top row. A. 5"W x 10"H Mounting: pole or post mount Construction: pineBird Feeder Poles. Mounting: Post. Use wren guards on active bluebird houses. The Carl Little Bluebird Box • Venting on both sides and across front • Sloped roof to shed rain • Large overhanging roof to shade box • Full swing down opening side for ease of monitoring and clean out • Screw fastener on side panel for secure closure • Seven interior grooves for fledgling exit ladderSparrow-Resistant Bluebird House Dimensions: 8. 25"H; Weight: 4 lbs. Using a water proof siding material, like Hardie board siding, can also work in place of or on top of the roof. Build a Bluebird Trail! Save $$ when you purchase multiple nest boxes. This Gilwood slot box is a simple yet popular bluebird house. Close this search box. In any mounting method, bird houses should be mounted approximately 5 feet off the ground. Use wood rough-cut on both sides so that birds can grip both interior and exterior surfaces. Go To Homepage. Version 1. A 1 1/2″ diameter entrance hole is located 6. Free bluebird house plans with video instruction. ". 75"H. Unfortunately for nesting birds here in mid-TN there are a number of predators and pests that can deter, disrupt, or destroy an attempt to nest. Home; Latest Item;. I looked at these few plans, and improvised my own. easy to monitor, real resistant to tempestuous weather and predators. Aug 08, 2013 #1. Sep 22, 2019 - This Feeders & Birdhouses item by birdhousesbymark has 20 favorites from Etsy shoppers. 2. House sparrow problems, more. Potential Harm Caused by Sparrows. 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. Choosing a Bluebird House to Build The 10 DIY Bluebird 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 . 5 x 5 x 10 inches. 2 1/8"2 1/8" CL Roof 3/4. by Fred Stille and Steve Gilbertson. In 2014 we had two nesting bluebird couples. Assemble as shown (you can also use nails instead of screws). Set up your nest box in an open area, away from houses and barns. Some great inexpensive books on building bird houses: Approximately 1 dozen cavity-nesting birds will use boxes with a 1 1/2" entrance hole. One-board map, Eastern Bluebird, Western Bluebird and Mountain Bluebird plans. Features slotted entrance at the top to discourage House Sparrows. This blue birdhouse is sparrow resistant. Use the attached, back hanger to place the home against a post or wall, or pole mount it with a mounting bracket (not included). All plans include diagrams and instructions. Add to cart Sold. ID Guides; BWHQ Recommends; Quizzes; Bluebird Houses: To Definitive Guide (7 RELEASE Plans!). 25"H. Carolina Chickadee. All American Blue Bird House, Light Blue. Classic Bluebird Bird House, Cobalt Blue. After installing the new boxes in the spring of 2014, we have had no sparrows taking up residence. Therefore, just because a box is called a "bluebird" housecontaining millet and cracked corn. A Bluebird house’s hole size should be: 1. Bird feeder baffles and bird house pole predator guards - deter squirrels, raccoons, snakes from climbing, raiding feeding / nesting sites. Each features a 1. Kettle Moraine Cedar Bluebird Mealworm Feeder (Best House Design) Kettle Moraine is one of the most popular names in the birdwatching industry. Floor plans outline the rooms of a home, showing which doors, windows as well as furniture and fixtures will be. 5-inch wide hole, placed 6 inches above the base of the board (use a compass and pencil to draw the hole first). Don't forget to drill the vent holes in the bottom, front, and sides. 2. The front piece should now be attached to the walls and base. 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. Opening: 4"L x 0. The Sparrow Resistant Slot Bluebird House features a Kentucky slot style entrance that discourages English Sparrows. 5–1. Features two wooden dowel perches on either side of the entrance to provide your bluebirds with a predator lookout. Bluebird babies or adults inside the box. FREE shipping and the BEST customer service!How Toward Building Bluebird House Plans Video. Since then, I learned of a trick from a friend that deters the house sparrows and allows the bluebirds. Asian 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 for the top front of the box Free Plans to Build a Blue House for Your Station.