25"H; Weight: 4 lbs. NABS (North American Bluebird Society) Approved. 875"L x 1. House melodic bluebirds without pesky sparrows using these Sparrow-Resistant Cedar Eastern Bluebird Houses. The Green Meadows Bluebird Nesting Box is Sparrow Resistant and is sure to help enhance the bluebird population of your outdoor area - providing a beautiful, safe and secure place for bluebirds to enjoy! Green Meadow Polywood Houses are USA made with eco-friendly 100% post-consumer recycled plastic. * 4 Best 5-Piece Bluebird House Poles w/Ground Socket. com. 4k) $ 82. NESTBOX PLANS. Make the hole large enough for a double-headed nail to slip in and out easily. Product details. Made from Eastern white pine. Simply mount to any fence, post, tree or wall. The Sparrow Resistant PVC Bluebird house features a wooden roof. They will kill the mother bluebird when she absolutely refuses to. 95 - $49. 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. Photo by the Hughes. General bluebird nest box dimensions should be: at least 9”x4. 99. 99. Because of all the harm that house sparrows cause bluebirds, it’s normal to wonder about sparrow-resistant bluebird houses. The Sparrow-resistant Bluebird house is perfect for Sparrow-infested areas. These will be used for the 1 1/2" galvanized screws that will function as hinges for the front door. 2. You can read these tips in greater detail on my website her. This Bluebird house has an unusual opening that is designed to prevent sparrows from entering. 875"H each. Recycled Bluebird House $54. 75"W x 10"H; Opening: 4"L x 1. House sparrows, also called English sparrows, are aggressive birds that compete with bluebirds for nesting boxes. Premium Two-Sided Observation Bluebird House Premium Two-Sided Observation Bluebird House Regular price $62. Features: The entrance hole size is 1-½". December 19, 2022. This non-native, predatory species is a nesting Bluebird’s worst nightmare. House Mounting: post or. Therefore, just because a box is called a "bluebird" houseAmish Poly Small Sparrow Resistant Blue Bird House from $69. Bird House Hole Size To Keep Starlings Out. The Gilbertson PVC Bluebird house features a wooden or polywood roof. 25"H Dimensions: 8. 125"H. 2 total votes. Construction: pine. 1-1/2" diameter entrance opening perfect for Eastern Bluebirds. • 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. ; drop: 5 1/2" Cross ventilation: 2 3/4 sq. 89. They also happen to be a non-native, invasive species in North America. Keep wrens busy by removing their “dummy nests”. It has a 1-9/16-in entrance hole which is ideal for Western Bluebirds. Slotted entry hole, measuring 4-1/4 x 1-1/4 inches tall. Free Bluebird House Plans for. 00 (10%) Availability: In Stock. This is an attractive product designed to be sparrow resistant. Naturally rot resistant and long lasting. Keep the birdhouse 100ft from the feeder. 99To find the right bluebird feeder, consider the following products rated highly by expert birders. x 5 in. Eastern blackbird list ability also have a 1 3/8 ten 2 1/4 inch vertical round drilled or a 1 1/8 inch horizontal sparrow-resistant slot entrance to the top front on the boxes . Poly Sparrow Resistant Bluebird Post Mount Bird House, blue birdhouse, bluebird house, Custom Birdhouse, Custom Colors, outdoor decor. We were aware that bluebirds suffer from having their homes absconded by house sparrows and that certain parasites, blackflies in particular,. Opening: 4"L x 1. Erva Bluebird Feeder. House Sparrows will invade and evict occupants of a nest box, if they can gain access. Your local bluebirds will feel right at home when you put out this Kentucky style, slot entrance house. 2. Hole saws were used for the xbox entrance and ventilation holes, as well as the mounting block. 3. Box design effectively deters sparrows from roosting. While a sparrow-proof bluebird box design has yet to be developed, there have been attempts at designing boxes that are less attractive to them. Woodlink NABB Audubon Bluebird Houses. 00 $ 78 . 00: Read more. Oceek Cedar Blue Bird Box House Wood Bird House Bluebird Box House Cedar Wren and Chickadee Wren Home Outdoor Hanging Wood Birdhouse No Assembly Required Hummingbird House (1Pack 3115 Assembled)Made from Eastern white pine. Product Description. Also the nest tray takes cubic inches away from the cavity which also discourages sparrows. 2-3/4 x 1-3/8 inch oval entry 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. Deciding what bluebird house you should get, should not be difficult or complicated. They are usually extremely effective in deterring HOSP from entering a bluebird nestbox to attack eggs, nestlings or incubating adults. Bird-X Stainless Steel Bird Spikes. House Sparrow. Here’s the short answer: Choose pale or neutral colors like light blue or gray for bluebird houses. Wrens will use holes that. FREE shipping Add to Favorites Previous page. Birdhouses Bluebird House Window Bird Houses for Viewing Water Proof Wax Dipped Solid Wood Bird Box Bluebird Houses for Outside with Metal Predator Guard TOOBEETT 4. 1-1/2 inch entry hole with Noel Guard predator guard. 75"H. Since then, these greatly adaptable birds possess expanded their range across the entire continent, and they are now found in almost every side off the world. com FREE DELIVERY possible on eligible purchases Amazon. Nature's Way Bird Products CWH3 Cedar Bluebird Box House. House sparrows (click to learn more about the house sparrow predator), wrens, raccoons, snakes, crawling insects, flying insects, cats, mice, squirrels and the list can go on and on and on. Features slotted entrance, proven to keep out House Sparrows. Songbird Essentials Sparrow-Resistant Bluebird House. Male House Sparrow at Feeder. According to research done at the University of Kentucky, bluebirds prefer the slotted entrance to the circular hole entrances frequently seen. Sealed for Outdoor Use & Holds Water. Bring bluebird-specific housing to your fence line or field using this Sparrow-Resistant Bluebird Houses with "T" Post Adapters package. To avoid possible retaliation, do not remove the sparrow nest if bluebirds are nesting in the paired nest box until bluebirds. 1306 Monte Vista Avenue. As if that is not enough, male sparrows will mate with several females. Note: Additional shipping charges may apply when purchasing in multiple quantities. 00: Read more. Photo above by THE Holy Hand Grenade! is licensed under CC BY-ND 2. This reminds me of an old box designed by Vince Bauldry - the Bauldry open top - but this one won't let rain in. It is impossible for a Bluebirder to watch a nestbox 24 hours a day, but a sparrow spooker is on duty full-time, from first egg-laying to fledging day. Made in the USA. House sparrows, also called English sparrows, are aggressive birds that compete with bluebirds for nesting boxes or b. Why the SRBH is sparrow-resistant?: The slotted entrance lets in sunlight, sparrows want dark cavities, not bright ones. The house sparrow is considered an invasive bird in many areas, causing damage and problems for native species. Although no nestbox suitable for bluebirds is sparrow-proof, House Sparrows are often reluctant to use Gilbertson PVC boxes as well as other nestboxes that have a small interior volume. by Backyard Bird Lover at Amazon. Many Bluebirders believe that the slotted entrance makes this house sparrow resistant. Photo on left with permission from Bluebird Love, Inc, photo on right of Wren Guard on Loren Hughes Slot box. If you have problems with sparrows taking over your bluebird houses, this may be the answer for you. Reviewed in the United States 🇺🇸 on April 24, 2010. 1-1/2 inch slotted entry hole. Also see a new approach to wiring a platform feeder to repel HOSP. Birdhouses Bluebird House Window Bird Houses for Viewing Water Proof Wax Dipped Solid Wood Bird Box Bluebird Houses for Outside with Metal Predator Guard TOOBEETT 4. The pipe detaches from the wooden roof to monitor bluebird nests quickly and easily. 375"L x 1. Make those cuts (first cut should be on a 15-degree angle, the rest will be straight cuts). Modern BirdhouseThe ideal place for an Eastern bluebird house is in a wide-open, sunny backyard. : To deter House Sparrows from feeders, put up a magic halo equipped with hanging, weighted hobby wires. House sparrows chase bluebirds away, crush their eggs, kill nestlings and also kill adult bluebirds. ) Also avoid feeding cheap seed mixes with millet and. . Made in the USA. Amish made in the USA. The bodies were of very new baby bluebirds, bald and feather-less, and were about 2,3, and 4 feet from the birdhouse. Sparrows, however, don't like the shallow box or the slot opening. Featuring an easy-open front panel, it slides down for checking the progress of nesting birds without disturbing. 21 How to Sparrow-Proof a Bluebird House; 22 A simple piece of wire can scare off house sparrows and keep bluebirds safe inside nesting boxes; 1 Laura Erickson’s For the Birds. Since then, these greatly adaptable birds possess expanded their range across the entire continent, and they are now found in almost every side off the world. Rustic in appearance, this wooden bird house is intended for use by serious birdersAlso the nest tray takes cubic inches away from the cavity which also discourages sparrows. 25"W x 6. The most common way is to make a fishing line grid over the entrance. Backyard Bluebird House. 6 Free Firewood Rack Plans. Add to Favorites Wren or Sparrow very nice A-Frame birdhouse / feeder (35) -All our creations are Unique,. Qty 4 Woodlink Cedar Predator Guards, 1. 95 Sold Out. 11) Mountain Bluebird Nest Box. Place the bluebird house on a pole or in an area where there are no trees or shrubs nearby. Image Credit: Phawat, Shutterstock. 99. Make a 4″ by 4″ floor (inside dimensions) and 9″ floor to ceiling height (inside front). It is. European Starlings, on the other hand, like premium black-oil sunflower seeds. Category. Protect the bluebirds nesting in your backyard. Building bluebird nest boxes is a great way to help conserve birds at the local level. The House Sparrow, upon discovering that its nest is gone, may usurp the bluebirds nest and kill the parent bluebird. Upland, CA 91786. Here I share easy, humane, and natural ways to discourage them from the yard. The Sparrow Resistant PVC Bluebird house features a wooden roof. com: DutchCrafters Sparrow Resistant Bluebird Poly House - Post or Wall Mount (Tudor Brown & Weathered Wood) : Patio, Lawn &. $ 99. View full detailsWhile a sparrow-proof bluebird box design has yet to be developed, there have been attempts at designing boxes that are less attractive to them. Sparrow Resistant bluebird house! This bird house made by our Amish artisans will look wonderful in your garden and hopefully attract some of those elusive bluebirds! - Easy to clean out - Front opens (held closed with 2 pins) - Easy to install - Durable - Box size is ~ 12 inches high x 5. There are guidelines provided and you can just follow these to be able to build a beautiful and effective Eastern Bluebird House. T his is a great, simple nesting box design developed by Tom Comfort of Antrim County and a committee of national bluebird house experts. Made in the USA, available exclusively at Duncraft. 25 square inches. Description. A minimum of 5′ enables most people to easily monitor and maintain the house. 25"W x 6. Sparrow Resistant Bird House for Outside - Amish Made in USA (Turf Green & Cedar) Bluebird. Mount the nest box at least five feet off the ground, not too close to buildings, and at least 50 feet away from brushy or wooded areas. Use wren guards on active bluebird houses. Proudly made in the USA. Use quality food preferred by your desired tenants. The Sparrow-Resistant Bird House is crafted specifically for bluebirds, making these ideal for bluebird trails. 97. 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. As a general rule, you should place your bluebird house in an open, sunny area where there is plenty of short grass where bluebirds can catch insects. Lay the floor piece on a work surface. Write a review. Removing Bird Nests. Your Price: $329. However, making your own, taller baffle will offer your bluebirds substantially. According to the Cornell University All About Birds, the The first large introduction of these. 25"W x 8"D x 10. F&M Front opening box. jill keepes Apr 30, 2023. 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. Opening: 4"L x 0. View Details. Also the nest tray takes cubic inches away from the cavity which also discourages sparrows. A deep blue, lapped cedar roof lends bold color to the. $66. Attract blue birds without being bothered by sparrows. Bluebird Nesting Boxes $ 25. Blue jay bird,Canary bird, Eastern blue bird,House sparrow bird (2. 4 3/4" x 4 3/4" floor. For Sparrow infested areas Ravenox offers a Sparrow Resistant Bluebird House as well. 99 ($35. 99. 2. Female House sparrows are browner all over and lack the black bib. Made with a 1 1/8" Horizontal slot, this house invites bluebirds not sparrows into your yard. Cedar Roof measurements: 9" x 7-¼" x 1". Audubon's collection of bird feeders, houses, bird baths, and accessories have been reviewed by our science team and field-tested for quality assurance. 625"H. but bluebirds don’t mind light boxes. Discourage sparrows from overtaking your bluebird sanctuary with this Sparrow-Resistant Cedar Eastern Bluebird House. Opening: 3. Brand New. Roof is made from Poly-Tuff™ for greater exterior quality. 5-in H Tan Recycled Plastic Bluebirds Nesting Box Predator Proof Bird House. Made from cedar, this house features ventilation. Honestly, my grandparents and my dad always put up houses for bluebirds and made a big deal if they had a pair nesting, so I guess I like them because it makes me think of them. Find and Remove Their Nests. Mount against any flat surface. Building a birdhouse for House Sparrows is one of the most uncomplicated and most enjoyable activities. 7k) $ 4. Discount applied at checkout. 00/Count) Avoid Feeding. Instead of a drill hole, this design has an open-top slot entrance, safer for birds to exit in case of an intruding predator. How to Get Rid of House Sparrows in Your Yard. Attract bluebirds, then watch your bluebirds fledge. Steve: Bluebirds, especially Eastern Bluebirds, like a large entry. House sparrows love to build a bulky nest over top of their nest and entrance. 25"H Dimensions: 8. 8 centimeters). These Audubon bluebird birdhouses are simple, well-built, and untreated. This item: DutchCrafters Plastic Poly Bluebird Nest Box - Post or Wall Mount, All-Weather Birdhouse for Outdoors, Sparrow Resistant Bird House for Outside - Amish Made in USA (Light Gray & Blue) $78. Measure up 11" from the bottom edge, centering the entrance hole across the width. Sparrow Resistant Blue Bird Box | Durable Poly Lumber | Amish Made | E102 (1. Sale. 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. 8) Peterson Bluebird Nest Box. 3. Of all the problems faced by bluebird landlords, house sparrows are easily the worst. Keep the threat of unwanted sparrows away from fantastic bluebirds with this Sparrow-Resistant Bluebird House with Open Top. TB-1B is 1x6 and 1x10 lumber. 95. They will take over prime nesting sites, particularly from eastern bluebirds, tree swallows, and purple martins, and usurp feeders and overwhelm other visitors, including finches, tanagers, buntings, native sparrows,. 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 . This item: DutchCrafters Plastic Poly Bluebird Nest Box - Post or Wall Mount, All-Weather Birdhouse for Outdoors, Sparrow Resistant Bird House for Outside - Amish Made in USA (Light Gray & Blue) $78. 5 inches (3. Construction: pine. They enter through a 1-1/2" hole surrounded with a slate predator guard to fend off annoying squirrels. This shelter, based on thorough research from the University of Kentucky, caters specifically to bluebirds and deters sparrows from nesting. Welcome a lively feathered family to your yard with the Bird Houses by Mark Sparrow-Resistant Bluebird Bird House. The slotted entrance helps prevent nosy sparrows from invading your feathered friends’ nest. Dried lawn clippings work great for nest replacement. Discourage sparrows from overtaking your bluebird trail thanks to this Sparrow-Resistant Eastern Bluebird House. Wait for birds. Key Takeaways: Implement effective strategies and practical tips to keep sparrows at bay and ensure a safe environment for bluebirds. PDF) NABS Bluebird FAQ (common questions) (4 pg. Give Bluebird House A Superior Look By Painting It. Phone (909) 931-9056. 7 out of 5 stars 59 1 offer from $35. by Union Rustic. Drill at a slight downward angle, going through the front of the house and into the side. These invasive birds can empty my big hopper feeder every day or two (and that feeder holds up to 12 pounds of bird seed!). This Gilwood slot box is a simple yet popular bluebird house. Made from cedar, this house features ventilation and drainage holes, a front door that opens for easy access for cleaning, hooks for hanging and a rough interior so fledglings can easily leave the. for mountain bluebirds), then use a rasp to even out the edges. The house sparrow, Passer domesticus, is one of the most familiar, widespread birds in the world. Opening: 4"L x 1. FREE shipping Add to. Layout and the drill the 1-1/2" entrance hole in the front (A). 39; Annapolis Lighthouse Bird House $105. Create Sparrow-Resistant Boxes. 99 to $79. These can be telephone poles, tomato stakes, small trees, etc. See Color Options. They are NOT sparrow-proof, but they help. DutchCrafters Small Sparrow Resistant Bluebird Post Mount Poly Bird House - Choose Your Colors - Amish Made in America. Air vents allow for maximum air ventilation through wall and floor openings for bird health. fishing line (mono-line) to make bluebird nest boxes House Sparrow resistant, but few detailed plans on how to do it. Features slotted entrance to deter House Sparrows. 75" western red cedar. A: Actually, the sparrows you mention are named house sparrows, and not true sparrows, that were first introduced into the Boston area in 1868 to control spongy moths (gypsy moths). See moreCedar is an excellent choice due to its natural resistance to decay and insects. 00 $ 78 . $66. WBU Sparrow Resistant Bluebird Nest Box: Our WBU Sparrow Resistant Bluebird Nest Box is designed to thwart pesky sparrows from taking over the box. The Southern California Bluebird Club has had good success withThe Sparrow Resistant Slot Bluebird House features a Kentucky slot style entrance that discourages English Sparrows. With sheltered boxes like this, a flock is more likely to move in this time of year. Because they adapt quickly to most deterrents, finding a single means of sparrow-proofing is difficult. Ventilation and. 25"W x 8"D x 10. Steps: 1. This will allow bluebirds to enter, while deterring larger birds like sparrows. In Stock. Rated 0 out of 5 stars. Made in the USA. from basic nest box to bluebird mansion! Vinyl Bluebird House $109. The 5 inch by 5 inch floor meets recommendations for Eastern, Western and Mountain Bluebirds. 1. This item: DutchCrafters Plastic Poly Bluebird Nest Box - Post or Wall Mount, All-Weather Birdhouse for Outdoors, Sparrow Resistant Bird House for Outside - Amish Made in USA (Turf Green & Cedar) $78. $62. 25"L x 1. Attract bluebirds or Tree Swallows to eat your insects. 95 Add to Cart. 05 Brown and Brown (Eastern and Western) / With Universal Mounting Pole - $114. 5”x4. House sparrow specific, more. Amish Handcrafted Sparrow Resistant BLUEBIRD HOUSE WEATHERPROOF RECYCLED POLY Bright Color Combinations Our Bluebird Nesting Box is sure to help enhance the blue bird population of your outdoor area - providing a. I don’t believe that one can make a nest box sparrow proof without restricting access to the desirable species. The Blackfly Resistant Bluebird House When we set out to design a cutting-edge bluebird house, we took our time to study the various needs of both bluebirds and bluebird enthusiasts . These include Tree & Violet-green Swallows, bluebirds, chickadees, wrens, nuthatches, and possibly titmice. Cut the two side pieces. Attract blue birds without being bothered by sparrows. 2. According to research done at the. Constructed from 0. Current price $49. All birds. 5"L x 1. It is the responsibility of every bluebird landlord to ensure that no House Sparrows fledge from their boxes. Sparrows like larger accommodations. It is made from recycled materials and is built to withstand hard weather. Sparrow Resistant Bluebird Skylight Box. The slotted entrance also enables bluebirds to escape more easily if threatened. Find perfect accommodations for your blues. $ 49. above the floor, this design corresponds with optimum bluebird dimensions. View Details. Eastern, Western & Mountain Bluebirds. 99. If you are trying to attract bluebirds in an area where you suspect HouseSparrow Resistant Bluebird House Green Meadow. Courtesy Ralph Kiertianis A pair of bluebirds battles with a house sparrow at their nest box. Gilbertson Nest Box - NABS Approved from $36. Eastern white pine. Dick Peterson's trail research proved that when given a choice, Bluebirds preferred his 2 1/4" x 1 3/8" oval entry over the standard round. House Sparrow-Resistant Design Your goal is to provide a safe environment for Bluebirds to breed and take measures to prevent House Sparrows from taking over and breeding in your nest boxes. Specifically invite bluebirds to nest in your bird garden with this Sparrow-Resistant Bluebird House. The best predator guard for a bluebird house or nest box that is commercially available is a stovepipe baffle at least 8 by 24 inches. The interior is well ventilated to avoid overheating, provide drainage and a fledgling ladder to help the. Price: $69. 4. From: "Tim and Alyce Quinn" <twoquinns@xxxxxxxxx> To: "Virginia Birds" <va-bird@xxxxxxxxxxxxx>, "New River Valley Birds" <nrvbirds@xxxxxxxxxxxxxxx>, "RoanokeBirds group" <roanokebirds@xxxxxxxxxxxxxxx> Date: Mon, 26 Apr 2004 09:32:58 -0400; Does. To remove the roof squeeze the sides of the house and it easily comes off for nest checks. , Lenox. 00 ($78. As low as: $48. PDF Booklet) EABL Nesting Growth Chart. Drill a 1 1/2″ diameter entrance hole located 7″ above the floor (to. Avoid using bluebird houses with larger entrance holes or slot entrances. 00. 75"H. This package contains 2 of the Sparrow-Resistant Cedar Eastern Bluebird Houses by Prime Retreat. Position the 5 1/2-inch edge of a side piece (opposite the ventilation holes) perpendicular to a 5 1/2-inch edge of the floor piece. Photo by Cher Layton of The Bluebird Nut Cafe. Nature's Way Bird Products CWH3 Cedar Bluebird Box House Crafted from Insect and Rot Resistant Premium Cedar with a Water-Based Protective Stain Check. Drill a 1 1/2″ diameter entrance hole located 7″ above the floor (to. Steve: Bluebirds, especially Eastern Bluebirds, like a large entry. Eco-friendly recycled poly lumber is fade and crack resistant ; All stainless steel screwed construction to protect against rust ;. in. This Kentucky style, slot entrance bluebird house is designed to thwart sparrows. House Sparrow proof. 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. Because of all the cause that house sparrows occasion azure, it’s normal to wonder about sparrow-resistant bluebird houses. But Linda Violett of California has found that somehow Western bluebirds seem to learn to control the box, despite HOSP competition. A table saw with its blade lowered was used for the drip kerfs on the underside of the roof and for the ladder kerfs on the inside of the front. Visit The Spruce's homepage. 🙂 #6. com) The F30 bluebird nestbox has a large floor space, totaling 30. All American Blue Bird House, Light Blue. Sparrow Resistant Bluebird Nest Box / Bird House. 5 in x 9 in Birdhouse. Discourage sparrows from overtaking your bluebird sanctuary with the help of this Sparrow-Resistant Western Bluebird House. Features slotted entrance to deter House Sparrows. 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. 6 x 6-3/4 x 12-1/4 inches tall. Remove Any Old Wasp Nests from the Nest Box. Some great inexpensive books on building bird houses: Approximately 1 dozen cavity-nesting birds will use boxes with a 1 1/2" entrance hole. 00. This set of homes and adapters is a fantastic gift for an avid bluebird landlord, providing a wealth of shelter and straightforward mounting. Sparrow Resistant Bluebird House (1 - 15 of 15 results) Price ($) Any price Under $50 $50 to $100 $100 to $200 Over $200. At least, this keeps the sparrow population from increasing. PVC 4″ Round. Features: The entrance hole size is 1-½". 5"W x 10"HSparrow-Resistant Eastern Bluebird House Regular price $59. 6) DANDR Nestbox Plan. 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. So let’s find out how to sparrow proof a bluebird house. Vinyl-coated wire surrounding the feeder prevents large birds like Northern Cardinals, Blue Jays, or European Starlings from coming in. The tube shape paired with the coloring of this birdhouse represents the look of a birch tree. These houses have a long rectangular opening instead of the classic circular entrance hole. Use wood rough-cut on both sides so that birds can grip both interior and exterior surfaces. Sparrow Proof Bluebird House. Front panel easily opens upward for nest. 1. The best way to keep house sparrows out of your bluebird houses is to make your environment as unattractive as possible to house sparrows. 375"W x 2. House Sparrow.