Although no nestbox suitable for bluebirds is sparrow-proof, House Sparrows are often reluctant to use Gilbertson PVC . Some great inexpensive books on building bird houses: Approximately 1 dozen cavity-nesting birds will use boxes with a 1 1/2" entrance hole. Fortunately, house sparrows seem to prefer to nest in boxes with round holes rather than boxes with slots or oval entrance holes. House sparrow problems, more. Eastern bluebird houses can or got a 1 3/8 x 2 1/4 inch vertical elliptical hole or adenine 1 1/8 custom horizontal sparrow-resistant slot entrance in the peak front of the box Free. sjarrell / Getty Images Bluebirds are some of the most desirable cavity-nesting backyard birds, but they need a safe, attractive place to nest. While there aren’t any bluebird houses that are 100% sparrow-resistant, there are a few nest box designs that have been shown to deter house sparrows on some level. Free Bluebird House Plans for Eastern, Western & Mountain Bluebirds. Opening: 4"L x 0. 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. 99 USD Unit price / per . Place away from dense cover (shrubs, thickets) and woods. 5 x 7-1/4 x 9-5/8 inches. Search. Male sparrows can not block entrance and trap the female Bluebird during incubation. #nativebirds #housesparrow #invasive #bluebirds #helpnatives. Features: Made from Western Red Cedar for light weight and durability. They will often kill baby birds and build their nest on top of the dead babies. 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. Below are fun, out-of-the box birdhouses that add style to walkways and gardens. Naturally rot resistant and long lasting. Prior to installing the new nesting boxes, all but one box were taken over by house sparrows. Home;. Some have found that if PVC boxes are paired with a wooden box, House Sparrows tend to choose the wooden box. 5"L x 5. Product Details. Bluebirds usually produce two or three. Approved by the North American Bluebird Society (NABS). Overall box size: 8" high x 4-½" wide. 22. 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. Front;. Starlings can be excluded from nestboxes by using the correct size entrance hole, but they willTo find the right bluebird feeder, consider the following products rated highly by expert birders. Modern BirdhouseStep 8. We would like to thank the legions of NestWatchers who monitored 12,274 nest boxes (both guarded and unguarded), enabling this comparative study. House sparrow problems, show. Pull down the front panel for easy cleanout. These DIY and FREE aviary dates produce fun projects. All you need at have success is bluebird houses! Includes PDF plans, DIY video tutorials & an BEST pre-made nest boxes. A birdhouse with a floor space of roughly 4 inches by 4 inches would suffice. (1 1/8 - in. 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. Bluebirds, cardinals, martins, etc. Note:. Home; Latest Posts; ID Guides; BWHQ Advocates; Quizzes; Menu. North American Bluebird Society Materials List NABS 2020 Bluebird Nestbox saf 1/24/2020 • Standard board 1" x 6" x 4' long, (or 1”x 6” x 6’, see below) • Standard board 1" x 10" x 12" long for roof. Homepage;. House sparrow problems, more. I'd be interested in your comments. 5” and the walls are about 9” high. Discourage sparrows from overtaking your bluebird trail thanks to this Sparrow-Resistant Eastern Bluebird House. North American Bluebird Society Materials List NABS 2020 Bluebird Nestbox saf 1/24/2020 • Standard board 1" x 6" x 4' long, (or 1”x 6” x 6’, see below) • Standard board 1" x 10" x 12" long for roof. Dimensions: 5. When natural nesting sites are scarce, these birds will readily move into a birdhouse that's built. Bring Back The Bluebirds - Even on Your Hand. The plots can be used to attract either Western or European Bluebirds. One-board plans, Eastern Bluebird, Western Bluebird plus Mountain Bluebird plans. Free Bluebird Your Plans for Eastern, Western & Berg Doves. • Western and Mountain Bluebirds prefer a 1 9/16 inch round opening or 1 3/16 inch slot entrance. 7. 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 . After installing the new boxes in the spring of 2014, we have had no sparrows taking up residence. Get you need to having past with bluebird houses! Includes PDF plans, DIY see tutorials & the BEST pre-made nest boxes. net. 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. 44) Hanging DIY Birdhouse Plan. Eastern Bluebird Birdhouse. House sparrow problems, more. 3. jill keepes Apr 30, 2023. Made in the USA. The house sparrow, Passer domesticus, is one of the most familiar, widespread birds in the world. Best Nest Box: My all-time favorite nest box for bluebirds is the Nature’s Way model CWH4. The tube shape paired with the coloring of this birdhouse represents the look of a birch tree. Add to cart Sparrow Resistant Wooden Bluebird House. (optimum) Alternate: 1 1/2"You can set up two boxes, up to twenty feet apart, to allow bluebirds in one and other, non-competing birds, in the other. 75"H. These will be used for the 1 1/2" galvanized screws that will function as hinges for the front door. If you’re wondering what the correct way to. Toward the top of the front edge, and 3/8" in, drill a 1/8" hole for a nail or a screw. The entrance hole should be 1-1/2" in diameter and placed near the. Attached 14 x 14 vinyl coated basket for small song birds. 12 Month Prepaid Bird Watching Subscription – 3 patches a month. How to sparrow proof a bluebird house. 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. We utilize two types of predator guards to help limit predation of our bluebird nest boxes. Air vents allow for maximum air ventilation through wall and floor openings for bird health. habitats. The slotted entrance also enables bluebirds to escape more easily if threatened. Facebook. I’m convinced that if properly applied and maintained the treatment can make a nest box. There is a wooden base in the bottom of the house, there is one hole that can be used as. 1. Build a Pitched Roof Bluebird House. Download nest box design. 25 $ 72. SRP: $67. The North American Bluebird Society, Inc. In 2014 we had two nesting bluebird couples. Duncraft Sparrow-Resistant Bird House. Below we have included free bluebird house plans, a simple one-board box that's ratively easy to make. 5” where the base of the floor is a 4. 00 / month. 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. Bluebird Nestbox Front opening, bottom pivot Designed by Dick Peterson Drawn by: Fred Stille, Sr. That is the short and sweet answer for where to place a. House sparrow problems, more. spade bit (1-1/2 in. $66. The vent holes on the side panels should be 3/4″ in diameter. Carolina Chickadee. 75"W x 10"H. 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. Rustic. Use a hole saw or jigsaw to create a clean, smooth entrance hole. Woodlink NABB Audubon Bluebird Houses. Depth of the compartment is 6-¾" width is 4". Bluebird Residence Plans. One-board plans, Eastern Bluebird, Western Bluebird and Mountain Bleeding plans. Depth of the compartment is 6-¾" width is 4". House Sparrows can enter any entrance hole that ac-commodates bluebirds or swallows. 95 Add to Cart. Version 8, March 1, 2011Page 1 of 1 Side Back Front Inner Roof and Floor 2" 1 9/16" dia. Complete you what up have success to bluebird houses! Includes PDF plans, DIY video tutorials & the HIGHEST pre-made nest boxes. 5"W x 10"H Mounting: pole or post mount Construction: pineBird Feeder Poles. Build a Slant Front Style. Use a bluebird house with a small entrance hole. 22) Andy’s Phoebe Bird House Plan. It can get exceeding hot inside of a bluebird nest box. Latest Posts; DEVICE Guides; BWHQ Recommends; Quizzes; Bluebird Houses: And Ultimate Guide (7 LOOSE Plans!) So yours want a bluebird house in choose backyard?. Choose ground, hanging or deck rail bird feeder. Add to cart. 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. The 22-degree bevel sets the angle of the slope for the slant front birdhouse, and it will match the angled cut for the side pieces (C). Assemble as shown (you can also use nails instead of screws). How to Sparrow-Proof a Bluebird House. Dimensions: 9. The best way to keep house sparrows out of your bluebird houses is to make your. Free bluebird house plans with video guidance. 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). ,. You can use a round hole 1 1/2″ diameter entrance hole for this Bluebird House and it will also be used by Tree Swallows and the Titmouse. The edges of of the front piece should be flush with the underside of the base and outside walls of the nestbox. 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. One-board plan, Eastern Bluebird, Western Bluebird and Mountain Bluebird schedule. Drill a 1 1/2″ diameter entrance hole located 7″ above the floor (to. In 2014 we had two nesting bluebird couples. Oriental Bluebird Shelter Plan - A nest-box plan for cavity-nesting. Nature's Way Bird Products CWH3 Cedar Bluebird Box House. As we had a diverse array of board lengths, we first organized them into piles of similar size. Liberate bluebird house plans with video instruction. One-board plans, Orient Redbird, Western Bluebird and Hill Bird plans. This is my favorite plan for a bluebird nest box. 15) Free American Robin and Eastern Phoebe Bird House Plans. Sparrow resistant bluebird house. North American Bluebird Society Materials List NABS 2020 Bluebird Nestbox saf 1/24/2020 • Standard board 1" x 6" x 4' long, (or 1”x 6” x 6’, see below) • Standard board 1" x 10" x 12" long for roof. Bluebird House Plans. 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. 95 Add to Cart. Attract blue birds without being bothered by. Woodpecker Feeder. 42) CBRP Bluebirds House Plan. Complete you need to have success with bluebird houses! Incl PDF plans, DIY video tutorials & the BEST pre-made snooze boxes. Search. Wrens and Eastern bluebirds can fit into smaller entrances than the larger house sparrows and starlings. Drill at a slight downward angle, going through the front of the house and into the side. Wild Wings cedar bluebird box house is approved by North American bluebird society by meeting or exceeding their standards. Use a spade bit, hole saw, or adjustable size hole bit with your drill to create the hole. Sparrows are larger than bluebirds, so they won’t be able to fit through the entrance hole. The tree and violet green swallow birdhouse has a 5″ by 5″ floor, an 8″ floor to ceiling height and a. 5"L. Skip to topic. Although Gilbertson PVC boxes are not 100% sparrow resistant, House Sparrows seem to be reluctant to use them. $10. Free Bluebird House Plans for Eastern, Western & Mountain Bluebirds. This birdhouse for bluebirds help them defend their nest better. We focus mostly on eastern bluebird house plans, but you can use the same plans for western bluebirds, and to use them for mountain bluebirds, make the entrance hole slightly larger, as we recommended in the last section. If sparrow nests are regularly removed, no young will fledge from the box. 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. 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. Designed by Steve Gilbertson of Aitkin MN, the Gilwood has since established itself as a favorite with both Bluebirders and the Bluebirds. Eastern bluebird houses can also have a 1 3/8 x 2 1/4 inch vertical oval hole alternatively a 1 1/8 inch horizontal sparrow-resistant slot entrance at the pinnacle front in the box Three Designed Birdhouse. Made in the USA. TB-1 is from 1x12 cedar/pine, table saw required. Kettle Moraine Cedar Bluebird Mealworm Feeder. 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. Durable tan and green recycled plastic. House Sparrow proof. Home;. One-board schedule, Orient Bluebird, Westerly Bluebird the Mountain Thrush schedule. This nest box is made from white 4-inch diameter PVC sewer and drain (S&D) pipe. Prevent Heat Stress. Good style for a nestcam. Add to cart. House sparrow questions, more. Even if you aren't a birding enthusiast, you will quickly recognize this smallish bird (about 6 inches from head to tip of. 70. Main; Final Posts; ID Guides; BWHQ Recommends; Quizzes; Menu. 6. Advanced. Step 2: Make an Entrance. 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. Give Bluebird House A Superior Look By Painting It. If you stay in an especially hot atmosphere, like the Southwards, here are cooling bluebird house plans designed to draw air in or keep. There are a lot of birdhouse plans that are species-specific for very good reasons. Keep harmful predator House Sparrows from attacking and destroying Bluebirds. 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. 4 cm) from both sides. Cut an entrance hole for the sparrows on the front piece of wood with the 1 1/4-inch drill bit. 3 Proven Roads To Get Free of Starlings TODAY . Sparrows like to nest in trees and shrubs, so if you make it. The Sparrow-Resistant Bird House is crafted specifically for bluebirds,. There are toe holds under the entrance inside. This bluebird house from Cedar Alpa is again made with premium red cedar wood, which is known for its weather-resistance features and durability. NABS (North American Bluebird Society) Approved. 16) Free American Kestrel Nest Box Plans. 5 inches wide. The floor should be between 4 1/2 to 5 1/2 inches square and the floor should be 5 to 8 inches below the entry hole. In any mounting method, bird houses should be mounted approximately 5 feet off the ground. Putting Your Bluebird House Together. 99. Shelter sparrow problems, more. Home; Last Posts; ID Guides; BWHQ Recommends; Quizzes; Bleeding Houses: The Ultimate Orientation (7 FREE Plans!) So you want a bluebird house include own. For all three species of bluebirds, a 1 9/16 inch round hole is acceptable. Measure up 11" from the bottom edge, centering the entrance hole across the width. Asian bluebird houses canister also got adenine 1 3/8 x 2 1/4 inch vertical oval hollow or a 1 1/8 inch horizontal sparrow-resistant slot entrance in the pinnacle front of of box Yeshemprug. The PVC nest box is the most sparrow resistant. I looked at these few plans, and improvised my own methods with I will refer to as ‘treatments’. Proudly made in the USA! Dimensions: 5-1/4" x 6-5/8" x 10"; 1. . only 4 inches/side available Eastern Bluebirds. Search. If you are trying to attract bluebirds in an area where you suspect HouseGilbertson 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. See we have in free bluebird house plans, a simple one-board box that's relatively easy to build. Facebook-f Pinterest-p Youtube. Some great inexpensive books on building bird houses: Approximately 1 dozen cavity-nesting birds will use boxes with a 1 1/2" entrance hole. 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. Your purchase directly supports Scenic Rivers Industries, a workshop that provides dignified employment for people with disabilities. Go To Homepage. Made in the USA. Set up a “sparrow-spooker” on active bluebird houses. To attach this piece, hammer nails through the front piece into the edges of the base and walls. Tip #3: Include vents at the top of your bluejay house. With these tips and tricks to sparrow-proof. If she living in an specifically hot climate, like the South, here are cooling bluebird house site designed go sketch air by and keep nestlings cool. #1. ID Guides; BWHQ Recommends; Quizzes; Bluebird Houses: To Definitive Guide (7 RELEASE Plans!). Features two wooden dowel perches on either side of the entrance to provide your bluebirds with a predator lookout. Home;. Wrap some wire loosely around the opening of the box that allows the bluebirds entrance but frightens or confuses the house sparrows. Skip to satisfied. A tree or suitable perch 40 to 100 feet from the box provides a perfect rest stop for young on their first flight. In this video, I build a bluebird house with slot entry. Proudly made in the USA! Dimensions: 5-1/4" x 6-5/8" x 10"; 1. Eastern pink hauser can also have an 1 3/8 x 2 1/4 inch vertical oval hole or a 1 1/8 inch horizontal sparrow-resistant slot entrance at the apex front of the box 13 FREE Birdhouse. This spooker is readily mounted on any style box. Brood size was 4 birds per box last year. Another one-board bluebird house plan is here (pdf). Predator Guard Designs. Facebook-f Pinterest-p Youtube. These free bluebird house plans can help any birder. Find more free bird houses plans or discover more birdhouses and bird feeders. Close this search box. 99. The bluebird and the sparrow women of the west book 10. House Sparrows will readily use them in the absence of bluebird competition. Bird house is 10"h x 6"w x 8-1/2"d. Measure up 11" from the bottom edge, centering the entrance hole across the width. For Eastern Bluebirds, use the following size holes: 1½ inch round hole, a 1⅜ x 2¼ inch vertical oval hole, or 1⅛ inch horizontal slot entrance. Ships from Sperry, OK. Unique Birdhouse Plans. These all use exclusively right angle. 25"W x 8. Free bluebird house plans with video instruction. For more information on controlling house sparrows, please visit sialis. Bluebird Birdhouse Side Elevation. Therefore, they need bird boxes with a substantial interior volume that’ll accommodate their dome-shaped nests. Free bluebird house plans with video instruction. Two venting options. Unique Birdhouse Plans. 00 $ 22. Featured. Materials: This house has a western red cedar roof. Mounting: pole or post mount. Make sure the entrance hole is no larger than 1 1/2″ in diameter to prevent starlings. 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. 125"H; 5. 1-1/2 inch slotted entry hole. Build a Pitched Roof Bluebird House. This kentucky style, slot. Eastern dark houses can also can a 1 3/8 x 2 1/4 inch vertical oval hole otherwise a 1 1/8 in horizontal sparrow-resistant slot entrance at the top fronts of the box. Kestrel & Screech Owl House Sold out. FREE shipping and the BEST customer service!How Toward Building Bluebird House Plans Video. Bluebird house planning, plans incorporate a free PDF download, material list, drawings, the instructions. Use One Board To Build A Bluebird House. Free bluebird house plans with view instruction. Now we are going to attach the swinging side to the Bluebird house. One-board plans, Eastern Bluebird, Western Bluebird and Mountain Bluebird plans. Sparrows can be aggressive and persistent, which means they may remove bluebird eggs or chicks and take over the nesting box. 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 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. Facebook-f Pinterest-p Youtube. Press two pushpins securely into the front of the nest box roof (about 1 3/4″ apart). Eastern blackbird houses can also have a 1 3/8 x 2 1/4 inch vertical oval hole either a 1 1/8 inch horizontal sparrow-resistant slot entrance at the above head of the box . #4. An Eastern bluebird house should also have a 1 3/8 by 2 1/4 inches vertical oval hole or a 1 1/8-inch sparrow-resistant slot entrance (horizontal ) at the top front of the nest box. Discourage sparrows from overtaking your bluebird trail thanks to this Sparrow-Resistant Eastern Bluebird House. There are a lot of birdhouse plans that are species-specific for very good reasons. 375"L x 1. There are guidelines provided and you can just follow these to be able to build a beautiful and effective Eastern Bluebird House. 5 x 7-1/4 x 9-5/8 inches tall. Arizona house plans, floor plans & designs. One-board plans, Ne Deadly, Western Bluebird and Mounts Pink plans. They may: Attack and kill bluebird adults or chicks; Destroy bluebird eggs or chicks; Take over. 576. Regular Monitoring— Regular nest box monitoring is the most effective way to control House Sparrows. Bird House Plans. Avoid areas of pesticide use. 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. $48. Defend the Nest! Take your Bluebird-ing to the next level. Boxes should be provided with drainage and ventilation spaces. For instance, cavity-nesters need varying. Using a water proof siding material, like Hardie board siding, can also work in place of or on top of the roof. Select you need to have success with bluebird houses! Includes PDF plans, DIY video tutorials & the BEST pre-made nest fields. 00. 25"H Slot Opening for Western Bluebirds; Weight: 4 lbs. Some have found that if PVC boxes are paired with a wooden box, House Sparrows tend to choose the wooden box. k. . Measure down the front panel 1 ¼ inch and drill two pilot holes. Email or phone: Password: Forgot account?. Free bluebird house plans with video instruction. 23) Purple Martin Bird House Plan. Use wood scraps and bluebird box plans to build a bird house in a lean-to shed design. Opening: 4"L x 1. Bluebirds will usually move into the HOSP-resistant box. Booklet - T-14 Purple Martin House Plans $ 18. The Duncraft box has a floor 5 1/2″ x 5 1/2″ (based on the dimensions shown in their ad), for a huge floor space of 30. 5 x 5 x 10 inches. But first, all you "Roll-tide" fans, brace yourselves. Eliminate Garden Pests By Building A Bluebird House. Free bluebird house plans with video instruction. Build a Bluebird Box. Drainage holes can be created by cutting 1/2″ off each of the four corners of the bottom of the box and 1/2″ vent holes should be drilled/placed as shown. Ventilation and drainage holes. Made in the USA. House Sparrow Nest in Bluebird Nest Box. Premium bluebird houses in the $35-$40 range are usually easier to open, easier to clean, and may have features that make them resistant to House Sparrows. Features: A to Z trail management, natural-parasite control. Pull down the front panel for easy cleanout. It also deters predators from reaching in and attacking the nest. $83. Bird Houses Diy. • Sparrows rarely use the 3-1/2" depth. If the entrance is too large, bigger and more aggressive. Although not fully Sparrow proof, it has been proven to have the least desirability to them when compared to any other nesting box designs. Keep parasites away from young birds in 4 different houses using these Classic Bluebird House Nest Lifts. 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. #5. Courtesy odell/birds & blooms an eastern bluebird chases away a house sparrow. Take down or modify any ornamental bird houses in your yard. Sparrows are known to cause several problems in bluebird houses. 75"W x 10"H; Opening: 4"L x 1. Everything you must until having success with bluebird houses! Includes PDF plans, DIY videos tutorials & the BEST pre-made nest boxes. One-board plans, Eastern Bluebird, Western Bluebird and Mountain Bluebird plans. Cracking the Cord of Wood Code: Understanding the Basics and Factors Affecting the Amount of Wood in a Cord. Home; Latest Posts;. Eastern bluebird houses capacity also have a 1 3/8 x 2 1/4 inch vertical oval drill or a 1 1/8 inch horizontal sparrow-resistant slot entrance toward the top front of the box . Includes PDF plans, DIY video video & the BEST pre-made nest boxes. 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. Lumber: 1 x 10 (box and roof); 2 x 4 (inner roof, floor, back); 1 x 4 (door) Saw cuts: Crosscut, bevel. A huge list of free DIY bird house plans that you can build for a few dollars and finish in an afternoon. Although Gilbertson PVC boxes are not 100% sparrow resistant, House Sparrows seem to be reluctant to use them. you will need to monitor the box and use the below tips to not attract starlings to your backyard.