Monday, January 23, 2023

Why are House Sparrows averse to halos and lines?

From page 9 of the U oof Neb Study (pdf)
The #1 question everyone asks is "how does the Magic Halo work?" The closest analogy is human's fear of heights. For example, on the roof of a skyscraper, few people would venture to the very edge minus a strong desperation for something. There will always be a few that will, regardless, even with bravado.

According to page 9 in the paper Monofilament Lines and a Hoop Device for Bird Management at Backyard Feeders (PDF) from the University of Nebraska, House Sparrows (HOSP) are unique in their aversion to hoops and lines (i.e. halo devices) given an unusual risk assessment.

2023 is our 5th year of hand-building and selling a custom 20" version of the Magic Halo, designed for hanging feeders and within the radius of the standard 1/2" shepherd hook. Though not HOSP-proof, it has proven very successful. In that time, our own study and survey data match that of the UNB paper, at about 85% effective overall.

The successful Halo user knows and understands the following:

  • Halos and lines are HOSP-resistant, and as such, may not eliminate all HOSP from feeders.
  • To achieve high efficacy, other HOSP deterrents may become necessary.
  • Efficacy may vary throughout the year, lowest coming in Summer.
  • Is prepared to remove and "reset" feeding & halo systems if necessary.
A complete guide to best possible Halo success is found on our website HERE. Our final 2022 survey results are below. You may request customer feedback in pdf at:

Wednesday, December 21, 2022

Magic Halo Newsletter, Late Autumn 2022

Web version HERE. Includes:

  • 2022 Magic Halo Survey still open
  • Welcome new customers
  • Shop to close for Summer 2023
  • Other News/Misc

Thursday, March 24, 2022

Magic Halo Newsletter, Spring 2022

Web version HERE. Includes:

  • Recommendation: Reconsider Summer Feeding
  • 2022 Survey reminder (only 3 Qs)
  • New Halo Return Policy
  • Other News/Misc

Wednesday, March 23, 2022

Storage Technique for your Magic Halo

We sometimes receive inquiries from customers on how best to store the Magic Halo during non-use periods. Many birders avoid feeding from late Spring thru Summer to avoid enticing juvenile House Sparrows and facilitating adaptation into adulthood.

The best suggestion we have is to hang it on a wall hook, similar to our in-store photos. Here are several examples you can use, in this case, against a white wall. Some customers hang it on a nail behind their shed, for example, or in the shed or other safe structure.

Sunday, January 30, 2022

Magic Halo Newsletter, Winter 2022

Web version HERE. Includes:

  • 2022 Survey is here! (only 3 Qs)
  • As we enter our 4th year . . .
  • Past links you may have missed
  • Other News/Misc

Saturday, January 29, 2022

Limited Magic Halo Money-Back Guarantee (policy)

A situation occurred recently where a customer purchased 3 Magic Halos, then due to efficacy issues, returned them for a refund. This is a reminder that new users should purchase one (1) Halo to start, in order to try it out first and make sure it works as expected. Though most of our customers are satisfied, survey feedback indicates that it doesn't always work for everyone. This may be purely contextual, or based on a number of factors that we continually try and explain. And of course, we have no way of knowing if these customers are confusing other brown birds. We continue appealing for feedback, and urge all buyers to participate in our survey.

Because of the above situation, if you purchase multiple Halos with no prior experience using the device, we can only offer a money back guarantee on one (1) Halo. You are welcome to return the others and we will assess their condition for possible refurbishment. If they can be refreshed and resold, we will consider a partial refund there as well. To qualify, you must be certain of less than 50% efficacy after 60 days of use, after troubleshooting with the recommendations in our User Guide. Shipping is the responsibility of the customer.

Please see our Disclaimer for further info about Halo efficacy, including how the device was invented, studied, and originally marketed. Thanks for your understanding  -Admin, MH

Wednesday, January 26, 2022

2021 Magic Halo Survey, Final Results

As expected, about 85% of customers report that the Magic Halo is helping reduce or even eliminate House Sparrows (HOSP) at their feeder. This appears commensurate with Sialis' estimate of a 88-94% deterrence rate in Winter and 84% in Summer. To help disrupt juvenile adaptation, we recommend feeding only in Fall-Winter-Spring. See our most recent post on optimizing your Halo experience, based on our own and customer inputs.

If you haven't already, please take our all-new 2022 survey, just 3 questions. It is important that we keep a pulse on our customer's results in using this device. Thank you so much everyone!

Tuesday, January 25, 2022

As we enter our 4th year . . .

After 5 years of using and 3 years of building and selling Magic Halos as a non-profit cottage industry, the most recent data shows that success is dependent on the following:

  • Feeder systems out in the open, away from trees, shrubs, garden furniture, fences, rails and other perch areas that serve as gathering and launch points.
  • Fall-Winter-Spring feeding only. Juvenile HOSP are immune, therefore, remove feeding systems through Summer and into early Autumn. The later in the Fall you restart, the higher your Halo efficacy is likely to be (winter is highest).
  • Feed husk seeds only (black oil sunflower, safflower). HOSP will crack and eat these, but they much prefer millet, seed hearts and other readily eaten foods. If other opportunities are present, they may divert elsewhere.
  • An area or neighborhood that is free from deliberate or otherwise abundant HOSP nesting facilities. For example, if people are providing nest boxes with 1.25"+ holes without monitoring, local colonization will be high with increased rates of juvenile Halo adaptation.
  • Hanging wires that are long enough to cover the lowest perch on your feeder. Failure to do so could see HOSP flying in from below (ext’s here).
  • Adding additional hanging wires remains subjective. Results are mixed from customer to customer. We always recommend starting with 4 wires, upping it to 6 if it appears all else has failed (<75% efficacy). Often times, buyers of 6 keep the extra 2 as spares.
  • A fairly level Halo; if your shepherd hook is too small, and is forcing it down on an angle, pull open the hoop at one of the inside crossbar set screws and bring it around the staff (staff now inside the Halo).
  • Acceptance that you may not reach 100% Halo efficacy. Adjust your expectations to e.g. 80-90%. The Magic Halo is a HOSP deterrent, not -proof. One can only determine this by carefully observing with vs w/o use of the Halo and its hanging wires. If you observe fewer HOSP with the Halo, then continued use still makes sense.
IF you are unable to eradicate the majority of HOSP regardless of steps taken, consider adding a platform or tray below your feeder(s) to contain fallen seed. HOSP by nature are very aggressive birds, and this also shows in their eating habit. Feeders mobbed by HOSP will empty it in very little time, with most seed going to the ground uneaten. A tray will at least help contain and ensure that most of your seed investment remains at the feeder, and does get eaten. Trays also help facilitate Cardinals, and will make it easier for them to overcome their mild aversion to lines/wires.

Read our Magic Halo User’s Guide for additional tips and advice. You can also join the Facebook groups House Sparrow Control and Birdhouses, Bird Feeders & Garden Designs for Native Species to share your experiences and seek the input of others. 

Sunday, January 23, 2022

Magic Halo 3-years in Review

To start 2022 in a good direction, let’s recap the most critical articles of the past few years. Some of our customers have passed the 3-year warranty point of their Magic Halo, and should be mindful of the toll that the elements may take on it. We carry all replacement parts at lower cost than retail from e.g. Lowes or Home Depot, available just by emailing us. Replacement wire sets are already offered on our products page. We will also have a Halo tune-up and safety check video coming out with the Spring edition of our newsletter. In the meantime, please review these past titles for anything that may help your bird-feeding and Halo experience:
It is important to note
that Magic Halo is a conservation-minded cottage industry. We do everything we possibly can to minimize cost, and bring you this product at the lowest price possible. If you were to round up the parts individually at e.g. Lowes, it would cost you more to build one of this quality yourself – never mind the labor involved. Just the 24 AWG wire roll alone costs $6, for example. Therefore, we are very happy that we can bring this product to you -- and it arrives with minimal cost and assembly required!  😇

Sunday, November 21, 2021

Magic Halo Newsletter, Autumn 2021

Web version HERE. Includes:

  • 2021 Efficacy Survey almost to a close
  • 2022 Survey will seek innovative input
  • Magic Halo safety video set for 2022
  • Other News/Misc

Tuesday, April 27, 2021

Mainly positive survey results into mid-Spring

Our ZoHo Magic Halo Survey results appear to be strong, or about 85% of customers report that the halo is helping reduce or even eliminate House Sparrows (HOSP) at their feeder. This appears commensurate with Sialis' estimate of a 88-94% deterrence rate in Winter and 84% in Summer.

For those of you that don't already know, Survey Monkey grew intolerant of us "freeloading" (using the free version for years) and forced us to switch platforms as of February. If you were among dozens of customers who took the Survey in early 2021, and haven't already re-taken it, we hope that you will HERE. It is only 3 easy multiple choice questions with a comments section.

If you are among ~15% reporting poor or failed results, you can email us (include a photo of your feeder and halo, if possible) for troubleshooting measures that we hope will turn things around for you. Please be sure to read our User Guide first.

As always, thank you so much!  --Admin

Monday, April 12, 2021

Are neighbors to blame for drop in Halo efficacy?

The view over the fence into our neighbor's yard
As always, and in spite of good survey results, we at are striving to learn why there can be a significant difference in House Sparrow (HOSP) behavior from year to year, and from one Magic Halo user to the next.

Starting in 2015, we were 100% HOSP-free at our feeders with halos. Given the success, we designed and produced our own Magic Halos for on-line sale. Then last year, for the first time, our halo efficacy dropped by ~20%. HOSP were now part of the feeder mix, albeit brief visits -- not full time or to the exclusion of native birds. Now in Spring 2021, HOSP are a regular presence, with young adult pairs going around menacing our nest boxes and platforms that are designed for native birds that include Chickadees, Wrens Mourning Doves, Robins, etc. The Halo continues its job in deflecting most HOSP from the feeders, at about 80%.

What changed from 2015-2019 to 2020? We fed through the entire year in 2020, including Summer, which may have contributed to the issue of HOSP juvenile Halo adaption/immunity. But a recent look over our fence may provide an even better explanation. Our western neighbor installed multiple nest boxes, well designed and situated for HOSP. We think this may have begun in 2019, but cannot be certain since we rarely looked over the fence.

Purple Martin house overtaken by House Sparrows
A weakness of the Magic Halo is HOSP juvenile immunity and adaptation into adulthood. If your neighbors are providing cavity nesting sites, they can rapidly multiply, with your yard and gardens as their home territory. If the young birds are using your feeders as juveniles, then it is possible that no counter-measures will deter them, because they will have grown into its presence. This is a theory, that just happens to match the evidence. But it makes a lot of sense.

It is much better not to install a nest box than to allow HOSP to reproduce in one. Unfortunately, many boxes are sold on the cheap, in stores like Home Depot or Lowes. These often have 1.25"+ entrance holes -- the minimum diameter that HOSP can fit through. These (and sadly, many Purple Martin communal houses) end up as breeding meccas for HOSP. Without active education at the point of sale, most buyers believe that they are "helping wildlife" regardless of species occupant. Even some specialty stores avoid the topic, and even encourage their customers with HOSP feeding and nesting. They may be afraid of the perceived monetary loss (selling less seed). On the other hand, they should know and understand the non-native, invasive and damaging nature of HOSP (and Starlings) on the north American continent. Any gains made by Bluebirds, for example, are largely owed to conservationists who are up to the task of monitoring and evicting HOSP from nest boxes. For those of us living in urban or suburban areas, simply dropping the hole diameter to 1.12" (1 1/8") will safely accommodate native species such as Chickadees and Wrens while excluding HOSP from entry.

As part of our ongoing Halo experiments and efforts at continuous improvement, we began trapping and clearing HOSP from the property in the 2nd week of April. Halo efficacy has returned to almost 100%, given that it disrupted this newly created colony as described above. In a return to years past, we are taking down our feeders for the June-Aug time period. We also wrote a friendly letter to our neighbor, explaining the HOSP problem in the hopes that they will adapt their boxes with hole size reducers and distribute them properly. Stay tuned on these efforts.

Humans created this problem 150 years ago by deliberately releasing HOSP mated pairs in urban centers across the U.S. Now we must try and reduce them, using all the tools in the toolbox. This includes halo/hoop devices, spookers, traps, or whatever means are necessary. Below are several valuable links you can use in your own efforts to control the scourge of HOSP, and maximize your Halo's efficacy and thus help native birds:

Managing House Sparrows (the most comprehensive guide, includes site map and history)
Magic Halo User Guide (measures to improve your Magic Halo's efficacy)
Backyard Birds (YouTube videos that include trapping and eradicating)
House Sparrow Control (Facebook)
Birdhouses, Bird Feeders & Garden Designs for Native Species (Facebook)

Sunday, February 14, 2021

Is your feeder wasting bird seed? Quick tip on what to look for

One of the most puzzling aspects of bird feeding is how poorly designed most feeders are. It is not uncommon at all to hear folks complaining about refill rates, sometimes multiple times per day. When factoring the cost of good quality seed, this can become very expensive. Fortunately, just sifting through the ground "waste" (usually full of whole, uneaten seed) may provide the clues needed to remedy the situation.

Most commercially available feeders are designed to bring the seed level up and even with the station edge (tube) or trough edge (hopper). That, or with little raised edge to spare. This results in seed falling out even with the tidiest of native birds eating. House Sparrows and Starlings accelerate the problem, by deliberately throwing seed overboard thus emptying these feeders in a fraction of the time. Good design goes a long way toward reducing this.

When choosing your feeder, don't be afraid to ask for a seed fill-up demo to verify that waste is minimized. In the case of a tube, you can easily examine this by looking at the station roof trailing edge. You want to ensure that it comes down at least even with the station edge itself. If it does not, it is likely that the seed will come up too high and readily spill out. The below photos more than illustrate this problem:

Above/below: Avian Woodlink Series feeders (white) are correctly designed. It is clear in these photos that the station roof trailing edge comes down even with the station edge itself. The result is seed staying in the feeder, with birds having to reach in that little bit further to access. Debris (husks, in this case) and some dropped seeds are contained by the tray below, giving it a second chance among platform-friendly birds e.g. Cardinals. 
Above: A closer look at the Woodlink. The seed (in this case Black Oil Sunflower) is well contained in the station and will not spill out on its own. This is what you want to look for when selecting a feeder. Ask for a seed fill demo if necessary, but a look at the station roof line is usually enough.

Above/below: An inexpensive tube feeder purchased at Lowes. The above (and below, with Safflower) are exactly what you don't want in a feeder design, which accounts for most store-bought models unfortunately. You can literally empty these feeders with barely shaking them. During normal feeding, multiple seeds fall out for each one taken and eaten. The ground below your setup will quickly accumulate whole seed, and unless you have hoards of ground feeding birds, it may start to germinate -- probably by Spring.

Above: A closer up look at the Lowes no-name brand feeder, this time with Safflower. This is a 100% terrible design. The station roof trailing edge is split, and makes it only halfway to the station edge itself. If we were to use millet-types seeds which have lower viscosity, this feeder will literally empty itself sitting still.

In summary, avoid any feeder where the fill line of the station edge(s) isn't at least 1/8" lower, otherwise your bird seed will not stay in the feeder even under normal feeding conditions.

Sunday, February 7, 2021

PLEASE READ: Magic Halo 2021 Efficacy Survey 2.0

Please take or retake the Magic Halo Efficacy Survey for 2021 (2.0), by Zoho

Survey Monkey stripped features from our 2021 survey to the point it was dysfunctional and useless. First, they made the comments field a paid feature, which we needed for feedback and testimonials. Their latest move was to cut our number of visible survey results to 40, after we reached 48 and were hoping for 50. This is less than half of what was allowed for unpaid accounts. In a "nutshell", they want us to pay $33/month to run a single survey for an entire year, that has little chance of seeing 100+ participants anytime soon.

That said, we switched to ZoHo, a refreshing new platform that, unlike Survey Monkey, won't put the squeeze on us over the longer term. Simply said, we're not paying $300+/yr for what amounts to very little usage.

We would sincerely appreciate your participation (or re-participation if you already completed the 2021 Survey Monkey survey, even recently) which has been deleted with data unavailable. We lowered it to 2 Questions and an optional comments box, which can be used for feedback or a testimonial. We basically need to replace what was lost, with your help. Click HERE to access the new survey, with only seconds of your time required..

We thank you so much and appreciate your understanding!

--Frankie (Admin,

Thursday, February 4, 2021

Quick Tip: Use a tiny binder clip to shorten hanging wires

Some of our customers have shown an interest in shortening their Magic Halo hanging wires. One customer claims that the weighted ends (hex nuts or bulbous sinkers) must fall even with the feeder trough or lowest station edge in order to work effectively. There is no hard study data making the case for wire length. In fact, in the original U of Neb paper, the "lines" (twine) were not weighted, but instead extended and pinned to the ground below for tension. Given that, we still believe that the weighted ends should fall a few inches below the feeder's lowest point, by preferably 6" or more. But given the subjective nature of feeding birds, and at least one customer's claim, you can always experiment.

If your hanging wires fall well lower than your feeder, there are a few easy methods for shortening them. We recommend "pigtails" using tiny binder clips. Simply wrap the wire around two fingers at the point they connect to the Halo and its crossbar, and clip in place as per the photos (older "Classic" model shown) below. Contact us if you have any questions or need assistance!

Wednesday, February 3, 2021

Customers confusing HOSP with native species

We have seen in the past few months that some of our customers are confusing House Sparrows (HOSP) with native bird species. We have had several complaints and even a Halo returned, citing its failure and that it actually encouraged more "sparrows" by providing additional perch space. Subsequent emailed photos revealed that it's not HOSP crowding their feeder, but Pine Siskins (PISI) or House Finches (HOFI).

As a result, we have updated our Disclaimer and Product Pages to better illustrate HOSP and how to identify them. We urge folks to read about the Pine Siskins and what is going on with that species (among others) and why they are suddenly "mobbing" feeders in the U.S.

The above said, we have been up front at all times that the Magic Halo isn't necessarily HOSP-proof. Our position is that it is a deterrent -- a tool in the anti-HOSP toolbox -- and at the very least, it should reduce them at bird feeders. We encourage folks to read our 2020 survey data and customer feedback and draw your own conclusions before buying a Magic Halo. Thank you so much.

(below is courtesy of Bayou City Birding, and can be found HERE in pdf)

Friday, January 15, 2021

Early 2021 Efficacy Survey Results: Analysis

Our 2021 Magic Halo Efficacy Survey
has just arrived, and the results are flowing in. If you haven't already, please click HERE to participate. It's only 3 multiple choice questions, and 100% safe and secure.

If you have already participated, and are among ~25% reporting poor or failed results, feel free to email us (include a photo of your feeder and halo, if possible) anytime for troubleshooting measures that we hope will turn things around for you: Please take note of the following:

  • If you bought your Halo before Sept 2019, the model "Classic" was only offered with 30" hanging wires in a 4 line config. This was ample length for most ordinary tube and hopper feeders, but the weighted ends fell about even or slightly above the feeding ports on jumbo tubes (e.g. Yankee Flipper, Brome Squirrelbuster Plus, etc). If this is you, we offer free wire extenders to anyone who requests them from before that time period. Email us at:
  • Consider adding additional hanging wires. Some of our customers report this as making the difference. If it is juvenile House Sparrows (HOSP), it may not make much difference, however, given their immunity to halos and lines-type devices in the first place. It's a matter of experimentation. If you are planning to add your own additional wires as a test, just ensure you add makeshift weights on the ends to tension them.
  • Among those reporting poor results, all but one feed year-round. The evidence suggests that HOSP deterrence is highest when the Halo is installed in the Autumn with continued feeding through Winter and mid-Spring. Feeding through the Summer may see Juveniles appear at your feeder, followed by continued immunity with adult adaptation into Winter and beyond. After 4 straight years at 100% deterrence, we fed through the Summer for the first time in 2020 and are having this problem now. We plan to "reset" our feeders by returning to a Fall-Winter-Spring schedule in 2021, and see if we return to 100% HOSP deterrence as in years past.
  • It seems to be the case that the presence of the Halo and its hanging wires does incite anxiety and nervousness in HOSP, and their visits shorter as a result. You may consider removing your Halo for a few weeks, and observe behavior in order to demonstrate any differences in this regard, and their numbers overall. 
  • Seed type and feeder design does not appear to make a difference so far. Husk seeds such as black oil sunflower or safflower still attract HOSP to feeders, where they may decide it's too much work to crack seeds. Because of this, they may move on elsewhere -- making this an effective deterrent in itself.
  • If you are one of those that saw Halo deterrence rates start to drop in the Summer with continued HOSP presence into Winter, consider taking down your feeder(s) by late Spring and reinstall come Oct or Nov. This may have the effect of "resetting" your system, with Juvenile HOSP having moved elsewhere, e.g. neighbor's feeders or other food sources in the region.
  • If you are on Facebook, consider joining one or both of these groups, which include lively discussions about HOSP and the use of Halos and similar means to control them: Birdhouses, Bird Feeders & Garden Designs for Native Species | House Sparrow Control
Our 2021 survey results are following a similar trajectory as years past, that at least 3/4 of users are seeing some level of positive results. We would love for this percentage to be higher so again, if you want us to try and help, email your questions and include a photo of your feeding station setup for analysis: Thank you so much! --Admin, Magic Halo

Monday, January 4, 2021

2021 Magic Halo Efficacy Survey Has Arrived!

Our 2021 Magic Halo Efficacy Survey has arrived. Please click HERE. It's only 3 multiple choice questions, and 100% safe and secure.

Even if you just took the 2020 survey, we ask that you please take this one too, and anytime a new one is presented. This is your chance to record your results, positive or negative. You can also let us know if you have stopped using your Halo for any reason.

 Halo efficacy can vary over time. Like FeederWatch, your data helps determine how best to market the Magic Halo -- which in the long run helps wildlife conservation.

Before you begin, please be sure of what you are seeing, that you can fully identify House Sparrows (HOSP). Do the best you can to compare before vs after, with vs without using the Magic Halo.

Try not to count juvenile HOSP, which are immune to Halos and other lines and wire devices. These can be difficult to discern from adults as the Summer goes on, if you feed year-round.

Visit our website for articles, mods and additional products that may help you to improve Halo performance.

For all issues and inquiries, please contact us at: Thank you so much!

Sunday, January 3, 2021

Magic Halo Newsletter, Winter 2021

Web version HERE. Includes:

  • 2021 Efficacy Survey Has Arrived
  • Possible HOSP Juvenile to Adult Timeline?
  • Bye bye UPS; back to USPS
  • Other News/Misc

Tuesday, December 8, 2020

Possible House Sparrow Juvenile to Adult Timeline

Thanks to Cornell U's Lab of Ornithology, we might have a better understanding of when House Sparrows (HOSP) fully mature. Juveniles are generally immune to halos and other lines/wires devices. According to this infographic, HOSP may not reach adulthood until sometime in mid-Nov, on average, throughout its range. We continue to wonder if continued adaptation is the case, especially if HOSP are resident and mature on site, where you live.

A single HOSP pair can spawn 10 to 20 fledglings per year. If you are one of only a few feeders in the neighborhood, they may be abundant -- regardless of seed type you are using. We know that the Magic Halo isn't always 100% effective, and in some cases, may only "help". Juvenile populations may account for that, since they begin to resemble adults as the post-nesting season goes on. Despite this issue, most folks will acknowledge that they are still better off using a Halo than not. Read about HOSP proliferation, courtesy of Sialis, HERE.