WindowAlert Hummingbird Anti-Collision Decal 12 Pack - UV-Reflective

In this review of the WindowAlert Hummingbird Anti-Collision Decal 12 Pack, the bottom line is simple: this kit is for homeowners and bird lovers who want a discreet, low-effort way to reduce bird collisions on clear glass. The single biggest reason to buy is the UV-reflective material that appears subtle to people but registers as a warning to many wild birds, providing a humane, passive deterrent. The decals are semi-transparent static-clings, come in sets of two per pack, and are ready for one-time exterior application after a careful window cleaning.

Key Features

• 12-pack with two decals per pack: Provides multiple decals sized about 3.5 in across so you can cover several windows or doors around the home.
• Semi-transparent static-cling: Sticks to clean exterior glass without permanent adhesive and appears like frosted or etched glass to people.
• UV-reflective material: Reflects ultraviolet sunlight as a glowing warning for birds while remaining restrained in human-visible appearance.
• Made in the USA: Designed and produced domestically by the company that pioneered UV window decals, giving confidence in consistent quality.
• Decorative design options: Available in a variety of hummingbird and leaf patterns so the clings can complement home decor rather than block views.

Who It's For

This product is best for homeowners, renters with removable window treatments, and anyone who values bird conservation and wants a simple, noninvasive solution to reduce window strikes. It suits windows and sliding doors where you can reach the exterior surface for one-time application and where subtle, decorative clings are preferable to large tapes or netting.

Those who rely on repeat repositioning, need a permanent adhesive solution, or have heavily tinted, coated, or otherwise treated glass that prevents static cling should look elsewhere or consult a professional prevention method. Also, expect variation in effectiveness by species and lighting conditions.

Pros & Cons

Pros

• UV-reflective material offers a bird-visible warning while remaining unobtrusive to people.
• Easy one-time application when windows are thoroughly cleaned, with a static-cling that avoids permanent adhesive.
• Compact 3.5 in decals and multiple design choices allow tasteful placement across many openings.
• Made in the USA by the company that pioneered the approach, indicating experience and quality control.

Cons

• Effectiveness can vary by species and light; some customers still report occasional collisions.
• Designed for one-time exterior application, so repositioning is not practical after initial placement.

Specifications

Our Verdict

The WindowAlert Hummingbird 12 Pack is a sensible, value-minded choice for people who want a subtle, decorative way to reduce bird strikes without permanent changes to their windows. While no decal is a guaranteed fix for all bird behavior and light conditions, the UV-reflective design, compact size, and American manufacture make it a practical first step for most homeowners seeking humane prevention.

Frequently Asked Questions

How are the decals applied?
Apply the static-cling to thoroughly cleaned exterior glass; do not apply over tinting, film, coating, or heavy dirt.

How visible are the decals to people?
They appear as semi-transparent, frosted or etched glass to humans while reflecting UV to birds.

Can the decals be reused or moved?
They are designed for one-time exterior application, so repositioning or repeated reuse is not recommended.