How do I return or exchange items?

Return & Exchange Policy

If you are unsatisfied with your purchase or ordered the wrong item, please contact us via email (avinet@briloon.org) and we will gladly accept it back for credit, refund, or exchange within 90 days of purchase, under these conditions:

1. If you paid by credit card, within 60 days of your purchase date we will issue a credit to the credit card that originally paid for the item.  We will do this after we inspect the item and determine that it's in re-sellable-as-new condition.

2. If you paid your original invoice by check, money order, ACH, or wire, or if the item was purchased 
under a Purchase Order, we will issue an exchange or refund, or credit your account, only after inspecting 
the item and determining that it’s in re-sellable-as-new condition. 

3. Shipping (and sales tax in ME) will be added if we send out a replacement item for you.

4. Unfortunately, there is a lot of work involved in receiving returns including inspection, repackaging, and restocking, especially with mist nets. Returned mist nets will be subject to an 8.5% fee to be deducted from your refund or issued credit. PLEASE keep the net in its original bag if at all possible. We cannot accept returns on mist nets that have caught wildlife due to contamination concerns. 

5. Whenever possible, please provide us with the invoice number or customer number of the original order.  One way or another, we must find the original invoice before we can process a return for you.

Of course, if a mist net is defective in any way, the 8.5% deduction from your refund will not apply.  Because each product is treated differently, please email or call us to discuss any shortcomings in product function. We ask that you help us to improve our service to you and your colleagues by providing as much detail as possible about what went wrong.  Thank you!

Please note we are not able to repair used nets at this time. We hope to be able to accommodate customers in this capacity in the future. We are happy to walk you through DIY repairs!


What’s the difference between nylon and polyester?

It depends on the climate of your mist netting site. Polyester is a little bit softer and has less elasticity than nylon, and performs better in wet and humid climates. Nylon can be just as durable as polyester, but performs better in regards to maintaining tension in dry, well-aerated sites. Overall, there are no long term studies that we have conducted examining durability of polyester and nylon nets side by side, and every researcher seems to have a different preference of material. If you have questions about your particular site, please feel free to consult us for advice. 

Where can I learn about bird banding?
What mesh size should I use?

24mm, 70/2 denier/ply

This is the smallest standard mesh size, and is ideal for very small birds like hummingbirds. Some banders prefer this size for capturing kinglets, bushtits, and the smallest wood warblers, but birds even as small as Song Sparrows will sometimes bounce out of this net; species that take sizes larger than 0 or 0A are best captured with a larger size mesh.

30/32mm, 70/2

This mesh size works well at capturing typical wood warblers, wrens, smaller sparrows (Chipping, Field, etc.). The line of peak efficiency between this and 36/38mm falls between birds taking US band size 1 or less (30mm) and those taking 1B or larger (36/38mm) (see Bird Banding 37:280-286).

 36/38mm, 70/2

General purpose for a large range of sizes. Ideal for sparrow to jay-sized birds but will still catch small warblers. See above.

60/61mm, 110/2 (210/2 if a thicker denier is desired, although some birds may be able to see and avoid it)

This net is ideal for jays, woodpeckers, robins, Northern Saw-whet owls, merlins, kestrels, etc. Birds the size of chickadees and wood warblers can slip through almost without stopping. In general, this size works well with birds that wear band sizes 2 through 5.

What kind of permit do I need to purchase mist nets?

Permit Requirements for Purchase of Mist Nets

Avinet policy is that we only sell mist nets for the purpose of ecological research, and only to customers who provide us with a copy of their federal or state-issued permit specifically authorizing use of mist nets to capture birds and bats. If you are purchasing on behalf of someone else, please make a note in the order comments who the nets are being purchased for and make sure that they are aware you are purchasing mist nets for them. We reserve the right to contact the permit holder to ensure that you are authorized to be purchasing equipment under their permit.
For the US, we accept the following:

  •  USGS Federal Bird Banding permits. Please specify if you are a subpermitee or the master permittee.
  •  US Fish & Wildlife Service federal permits for scientific collection. 
  •  State issued scientific collection permits (if exempt from federal permit)

Canada: Environment Canada permits

Australia: ABBBS Permits (Australian Bird and Bat Banding Scheme)

If you are not able to produce any of the permits above, we will accept on a case-by-case basis a formal letterhead issued by an official of the Ministry of Environment (or equivalent in your country) authorizing you to conduct research using mist nets in a given region. We will also accept on a case-by-case basis a formal letterhead issued by your supervisor, mentor, or head of office who can attest to your experience using mist nets and be responsible for any reports of misuse.

We do not under any circumstances sell mist nets to those engaged in pest control or bird mitigation services of any kind. Our nets are strictly for research and are not to be used by those who are not compliant with state and federal law.

Please consult us via email (orders@avinet.com) or give us a call at 1(888)284-6387 if you have any questions regarding what is appropriate for our permit requirements. 

What band size is used for ----?
What shipping method should I choose?

For domestic shipments, we have the following options depending on your delivery area:

  • UPS Ground:
  • 1-2 days transit time: Most of the Northeast, includes as south as Virginia
  • 3-4 days transit time: Midwest, Central, Southeast. 
  • 5 days transit time - Everything west of Colorado. 
  • 6 days transit time - Hawaii, parts of southern Oregon.
  • UPS 3 Day Select
  • UPS 2nd Day Air
  • UPS Next Day Air
  • USPS Priority Mail - 2-3 days depending on delivery area, orders placed after 10am EST will be shipped the next business day.
  • USPS Priority Express - 1-2 days depending on delivery area, orders placed after 10am EST will be shipped the next business day.

For shipments going outside the US, we offer:

  • UPS Canada/Mexico Standard (6-10 business days)
  • UPS Worldwide Expedited (2-8 business days average)
  • UPS Worldwide Saver (3-9 business days average)
  • UPS Worldwide Express (1-3 business days average)
  • USPS Priority Mail International (6-14 business days)
  • USPS Priority Mail Express International (3-7 business days)

We will also ship FedEx upon request. 

Please note that export shipments are privy to duties and taxes and the shipping recipient is responsible for all duties and taxes incurred on their shipments.

Mist Net Terminology 101

There are a lot of strange words used to describe the features of mist nets. What do they all mean? 

Trammel: The cording that runs horizontally along the net to create the shelves or pockets.

Shelf: The baggy netting between trammels which is the space where birds fly in and get caught.

Tether: The interval points at which trammel lines are tied along the length of the net to prvent netting from bunching towards either end of the net. 

Mesh: The designation of the size of the opening in a given net and defined as one-half of the perimeter of one of the mesh squares of the net. This distance can best be measured by stretching a mesh square, measuring one of the four sides, and multiplying by 2= designated mesh size. Example: One side of the mesh square reads as 18mm. 18mm x 2 = 36mm mesh.

Denier: The term used in the textile industry to denote the fineness of a given thread (or yarn), defined as the weight in grams of 9,000 meters of yarn. Thus, 70 denier yarn weighs 70 grams per 9,000 meters. The lower the denier, the lighter and more fragile the yarn is.

Ply: The number of individual strands of yarn used in a twisted strand of netting. Generally, mist nets are either 2-ply (most typical) or 4-ply (if they are extra heavy mesh). 

How do I request a quotation?

It's easy! Follow these steps:

  • Add items to your cart as if you were going to place an order.
  • When you're done, there is a blue bar at the top of the webpage, click "Checkout or Request Quotation". 
  • This will bring you to your Shopping Cart. Review your order carefully and scroll down to the blue button and click "Checkout or Request Quotation".
  • This brings you to a page that is titled "Select Order Type". Select the option "Request quote". 
  • On the following pages, you will be prompted for the billing and shipping information as well as permit information. Fill out the required fields and click the blue button "Continue to next step".
  • Select your shipment option and click Continue to next step.
  • Review your order and click Continue to next step to submit your request for quotation. 
  • Done! You will automatically receive your quotation. Remember, this is just a quotation, so we save them until you would like to make them into a confirmed order. To confirm your order, please send payment using our online Pay Invoice feature, send us your purchase order to orders@avinet.com, or just contact us to let us know you'd like to confirm.
How do I keep my net loops from falling down?

Angle your poles slightly out at the top to provide tension. Use a hitch in the loop. The ridge formed by the connector will provide a sure grip for the top loop.


What kind of permit do I need to purchase color bands or blood sampling supplies?

For color bands, we require a federal or state-issued permit allowing placement of auxiliary markers or bands on migratory birds. It usually reads as the following on BBL permits:

We make exceptions for captive or rehabilitated birds. If available, please send us your rehabber's permit.

For blood sampling supplies, we are currently only able to sell them within the USA because of importation laws. We require your permit to specifically list your authorization to take, possess, and transport blood samples, and we cannot make exceptions. 

Please contact us if you have any questions about what is appropriate permit documentation.

How can I seal color bands?

Thread burners work particularly well to seal Darvic bands. They are battery powered tools that fit nicely in your banding kit and are available at most craft stores. Alternatively, a small electric soldering iron has worked for some, 

Celluloid bands are sealable using acetone. They do not melt well using heat, and are in fact quite flammable so we do not suggest trying to seal them with a thread burner or small soldering iron!

How should I decontaminate a mist net to help prevent the spread of white-nose syndrome in bats?

As white-nose syndrome spreads rapidly across the US, it is very important for all bat researchers to use proper decontamination procedures to help prevent the spread of the deadly fungus. Mist nets in particular need to have special care taken in the decontamination procedure to make sure they are properly treated. US Fish & Wildlife Service on behalf of www.whitenosesyndrome.org recommends submerging mist nets in hot water (≥131°F or 55°C) for 20 minutes taking great care to not let the water boil. Boiling a mist net is the best way to ruin it. Please visit https://www.whitenosesyndrome.org/resource/united-states-national-white-... and download the full PDF document.

Where can I get a band color sequence generator?
What’s the difference between celluloid and Darvic color bands?

The big advantage of celluloid bands is the ease with which you can seal them (with acetone). They also hold their “memory” a bit better than Darvic. Unfortunately, the sheet material required to make celluloid bands has been exhausted, and one by one, the celluloid colors are becoming unavailable. We will continue to order as many celluloid bands as we can, for as long as we can. 

Darvic is the trade name for un-plasticized PVC, which is dyed with colorfast dyes and is UV resistant. That’s the number one advantage of Darvic bands. It is possible to seal Darvic bands with plumber's UPVC Solvent Cement, which uses methyl ethyl ketone as a solvent to partially dissolve the plastic to form >a bond. Acetone will not work on Darvic bands and Superglue (tm) is unsuitable because it does not work by solvent action1. For the strongest bond, you may melt the seam of the Darvic band shut, using a small portable soldering iron. (Thanks to Nils Warnock of PRBO for his guidance with Darvic band issues).

Important note: Store leg bands at or under 110°F (43°C) or bands will lose curvature and break, and we do not recommend storage in plastic, both long and short term. Do not leave leg bands in your hot vehicle or a hot metal boat!