How To Prevent Birds From Flying Into Window
At beginning glance, it looks like an insanely prolific morning of birding: 4,136 Song Sparrows, 3,632 Night-eyed Juncos, 3,362 Swamp Sparrows, ii,532 White-throated Sparrows, and 1,417 Hermit Thrushes.
Merely the numbers don't represent living birds. They tally the birds that died after colliding with i Chicago building from the fall of 1978 to 2004. And a frightening number of birds of other species were also killed. In all, 31,705 individuals from 141 species were establish dead at the edifice.
The story is similar beyond the country. Collision with manmade structures ranks second amid causes of death amongst migratory birds in North America. (Habitat loss is No. 1.) Approximately 100 million birds die in collisions every twelvemonth — some experts put the number equally high as one billion.
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Alpine urban buildings aren't the but obstacles migrating birds face, though. Most of the windows birds collide with vest to houses. According to George Fenwick, one-time president of American Bird Conservancy, a home may kill a dozen or more than birds a year without the owner beingness aware.
Daytime bird collisions typically occur for one of 2 reasons:
1. The window is reflecting the surrounding habitat, and birds can't tell the difference.
2. The window is transparent, and birds encounter through it to highly-seasoned objects on the other side.
Fifty-fifty if the impact doesn't kill a bird immediately, information technology may be injured or stunned, making it vulnerable to predation subsequently. Night presents its ain challenges. Many birds migrate then, using natural light from the moon, stars, and setting sun every bit navigational tools. Our brightly illuminated cities and neighborhoods interfere with this behavior by letting artificial calorie-free leak into the atmosphere. The glow draws birds in, and they tin can get trapped. In one case in a beam of low-cal, they may be reluctant to fly back out, or become disoriented and pulled off form. Confused and exhausted, they oftentimes collide with buildings, homes, or each other.
But it doesn't take to be that mode. Toronto, New York, San Francisco, and other cities accept started lights-out programs aimed at persuading edifice owners to plough off lights from sunset to dawn during migration season. Results are promising. Lights Out Chicago, for example, has saved 10,000 birds annually. You can do your part to make the skies friendly for migrating birds by deterring window collisions and minimizing light pollution at your habitation. Below are some of the best products on the market place for doing but that.
3 simple ways to prevent birds from hitting windows
Taking the elementary steps listed below — in addition to deploying the products described on this page — volition dramatically reduce the chance that birds will be harmed in collisions at your habitation.
ane. Move feeders close to your windows — i.5 feet or closer. From this distance, birds won't be able to build upward plenty momentum to hurt themselves if they do fly against the glass.
ii. Shut curtain and blinds when possible to break upward the illusion of clear passage or reflected habitat.
3. Motion houseplants away from windows. Birds may view them as refuges and try to perch on them.
Use Netting or Screens
Barriers to mount in forepart of a window to foreclose birds that wing into it from striking the glass.
Bird Screens
An attractive transparent black fiberglass screen that hangs loosely in front of a pane of glass, providing a gentle absorber for birds that strike information technology. Screw hooks and suction-cup brackets, included with purchase, secure the screen to a window or sliding door. Custom sizes available.
Toll: $22-$26 for windows, $24 or $26 for a sliding door screen
WEB: www.birdscreen.com
Bird Netting
Bird-exclusion netting made from durable, lightweight polypropylene, sold as PollyNet and Woodpecker Netting. Useful for keeping birds out of eaves or open spaces. Secure with net clips, hooks, or a staple gun. Hang the netting tightly at least ii inches from the drinking glass to provide a firm bulwark that will keep birds from hit the window.
Toll (PollyNet):$125.95 for Premium (fourteen′ x 50′), $65.95 for Lightweight (17′ x 50′)
WEB:nixalite.com/pollynetbirdnetting, nixalite.com/nettinghardware
PRICE (Woodpecker Netting): $50 for 3-quarter-inch mesh (14′ x 100′)
Spider web: absolutebirdcontrol.com
Check the price and availability of PollyNet'south Premium (fourteen'x50′) netting on Amazon.
Anti-cogitating Window Films
Antireflective vinyl or polyester films to apply to the exterior of a window to make it visible to birds.
CollidEscape
Covers the entire exterior surface of a window, reducing its reflectivity and transparency substantially, while thousands of small perforations in the flick allow light to pass through to the interior. Ten percent of the buy goes to the Fatal Calorie-free Awareness Programme (FLAP) to help fund research to reduce bird-window collisions. Tin be custom-printed.
PRICE: Varies depending on size and product.
WEB: www.collidescape.org
Check the price and availability of CollideEscape products at Amazon.
Window Dressings, Etc.
"Glass fine art for windows," these patterned films stick to whatsoever smooth surface, decrease glare and UV light, and reduce reflections and the illusion of clear passage. Accept care to select a blueprint that offers adequate coverage.
Cost: $54 for 36″ x 76″
WEB: windowdressingetc.com
Decals and Paint
Vinyl decals and paint to utilize to windows to minimize areas of clear or reflecting glass.
Whispering Windows Anti-Collision Window Decals
White static clings you tin identify on the inside or exterior of a window, where they contrast with nighttime reflections of trees and surrounding scenery. Choose from a diverseness of nature-themed designs. Easy to apply and reusable. Bachelor at your favorite birding-supply store or garden center.
Price: $six.99 for pack of 8 decals
Spider web: www.wpines.com
Etched-Drinking glass Window Decals
Vinyl decals that give windows, window corners, sidelights, and doors the appearance of etched drinking glass. Bachelor in a multifariousness of natural, sporting, and artistic patterns.
Cost: From $3.l to $32 depending on size. $75 for a full door.
WEB:windowdressingetc.com/decals.htm
Tempera Pigment
Widely available, long-lasting, and rainproof tempera paint can be applied with a castor or sponge. Make your own stencils, purchase them from your neighborhood art-supply shop, or download them for free from www.spraypaintstencils.com or other websites.
3 tips for using decals and paint on windows to prevent bird strikes
ane. Utilise multiple decals; create a pattern that covers the window uniformly. Elements arranged in columns should be four inches apart. Elements placed in rows should be ii inches apart. This is often called the 2 ten 4 Rule.
ii. Elements should be at least one-eighth inch in width and should contrast as much as possible with the windowpane.
3. Patterns can exist placed on the inside or outside of a window that is transparent. If it is reflective, the pattern must exist applied to the outside.
Source: Fatal Calorie-free Awareness Plan (FLAP)
Birds Avoid Strings and Cords on Windows
Curtains of nylon cords or monofilament lines to hang over a window's outside. Birds meet these cords and try to avoid them.
Acopian BirdSavers
Ingenious and attractive, BirdSavers consist of one-eighth-inch-diameter nylon cords that dangle about 4 inches apart in front of a window'south exterior, where they are visible to birds, which avoid them. Velcro secures the hanging cords to the tiptop of the window. Recommended past Contributing Editor David Sibley and Daniel Klem Jr., professor of ornithology and conservation biology at Muhlenberg College in Pennsylvania, who has been studying bird-window collisions for more than than 20 years. Instructions on the website describe how you tin build your own.
Toll: Varies with glass width. $24 for five cords (for glass 21.25″-25.five″ wide). Proceeds support conservation programs at the Acopian Eye for the Environment.
WEB: world wide web.birdsavers.com
Bird Crash Preventer
A preassembled curtain of taut monofilament lines strung three inches apart and 5 inches from the outside of a window or sliding-door side console. Birds see the lines and avoid them, while the infinite between the lines and glass gives birds that affect them a chance to spread their wings and brace themselves. Available in dark brownish and white.
Cost: $27.95 for 36″ wide (12 lines), $29.95 for 48″ (16 lines)
WEB:santarosanational.com
Translucent Tape
Translucent record to adhere to a window's exterior. Birds run into it and are warned of the drinking glass, but calorie-free still passes through.
Feather Friendly Do-It-Yourself Tape
Small white markers are transferred from the tape to a window's exterior, leaving an attractive, unobtrusive filigree of dots that brand the glass visible to birds while providing more 98-percent-clear viewing from inside. Like markers were recently practical to the exterior of the Consilium Place office complex in Toronto, the subject of a lawsuit over bird strikes last year. Each residential kit comes with 100 feet of marker tape, two measuring strips, and installation instructions.
PRICE: $fifteen.99 (Canadian) each for ane-2 rolls; $xiv.99 each for 3-6 rolls; $xiii.99 each for 7-12 rolls (plus shipping)
WEB: www.featherfriendly.org
ABC BirdTape
Designed and tested by American Bird Conservancy, BirdTape alerts birds to the presence of glass while nonetheless allowing calorie-free to pass through. Available in three-quarter-inch and three-inch widths. But cutting to the desired length, remove the backing, and apply to a window's outside.
PRICE: $19.95 for three-quarter-inch tape (50 feet), $24.95 for three-inch tape (fifty feet), and $27.95 for three-inch tape pre-cutting into squares (30 feet)
Web: www.abcbirdtape.org
UV Technology
Decals, liquid, and peculiarly coated drinking glass that reflect ultraviolet light, which birds can see but we tin can't.
WindowAlert Decals
Decals cling using either static electricity or a low-tack adhesive. Each has a coating that reflects ultraviolet light, which birds can see only we can't. When placed on a window's outside using the ii ten 4 Dominion (see tips for using decals above), the resulting glow blueprint deters window strikes. Choose from hummingbirds, collywobbles, maple leaves, and other shapes. Available at your favorite birding-supply shop.
PRICE: $6.45 for 4 decals
Spider web: www.windowalert.com
Cheque the toll and availability of WindowAlert Decals on Amazon.
UV Liquid
An piece of cake-to-apply liquid that tin exist daubed on a window's exterior and dries clear, leaving marks that birds tin can see. Apply aslope decals for the best coverage and protection against bird strikes. Available at your favorite birding-supply shop.
Cost: $19.45 for 1.5 oz.
Spider web: world wide web.windowalert.com
Ornilux Bird Protection Glass
Tested by the Max Planck Plant for Ornithology in Germany and at American Bird Conservancy's flight tunnel at the Powdermill Avian Research Middle in Pennsylvania, Ornilux glass is laminated with a UV-reflective, patterned coating that is nearly transparent to our eyes but visible to birds. Available for new structure and window replacements as either laminated glass or a double-glazed insulated unit.
PRICE: Contact Arnold Glas N.A. for a quote.
Spider web: www.ornilux.com
Five bird deterrents that don't work
1. Hawk silhouettes:
1 window decal in the shape of a hawk will non affright birds. Shape is non important.
2. Single window decals:
Affixing a single decal to a window will not deter birds. To lessen the area of exposed glass and help make a window visible to birds, use multiple decals (even multiple decals in the shape of a hawk).
3. Plastic owls:
Birds acquire quickly that a motionless plastic owl is non a threat.
4. Noise deterrents:
Common racket deterrents — high-frequency ultrasound, dissonance cannons, and recorded distress calls — are ineffective at preventing birds from colliding with windows.
5. Magnetic fields:
Some deterrents emit a magnetic field said to disrupt birds' geomagnetic orientation and encourage them to avoid the area. Magnetic fields are not effective at protecting birds from window collisions.
Source: Fatal Light Awareness Program (FLAP)
Bird-Friendly Lighting
Shields, bulbs, and other items that preclude lite from shining into the nighttime sky, where birds migrate.
Removing unnecessary lighting
This is one of the simplest ways to reduce night collisions. Ideally, you lot would turn off all lights betwixt dusk and dawn, especially during migration flavor — that is, from mid-February to the terminate of May and from mid-August to the end of November.
When that's not possible, you can still take steps to command when and where low-cal shines:
1. Use fixtures that are shielded, instead of globe-type models that spew lite everywhere.
ii. Choose downlighting over uplighting to go on from directing lite into the night sky.
iii. Apply motion sensors to avert steady-called-for lights, and timers to ensure that lights aren't left on longer than necessary.
4. Expect for products that take been approved past the International Nighttime Sky Association, a nonprofit organization that works to preserve and protect the nighttime environment through environmentally responsible outdoor lighting. You tin can find lists of IDA-approved fixtures on the association's website.
Some other effective step to consider is controlling the color of the light produced by your home.
When it comes to the furnishings of light on birds, not all wavelengths are created equal. Red calorie-free and white light (which comprise visible long-wavelength radiation) disrupt birds' geomagnetic orientation. Blue and greenish contain less long-wavelength radiations and are much less disorienting.
Jennifer Horton is a freelance author who lives in Greenville, S Carolina. She has also written for u.s.a. about learning to bird by ear .
American Bird Conservancy's resources for preventing glass collisions Originally Published
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