Osprey Deterrent Eagle
The Osprey Deterrent Eagle is a patented effigy resembling a bald eagle, made by Bird Deterrent Technologies (BDT). It works by tapping into ospreys’ natural fear of eagles. When mounted on a tower, the effigy’s presence and silhouette signal to ospreys that a large territorial raptor is there. Ospreys will not attempt to nest near what they perceive as an eagle, so they steer clear of the tower. The decoy doesn’t move or make noise – it simply stands guard 24/7. Despite being static, it’s very realistic and placed conspicuously, which is enough to discourage ospreys from landing or nesting on that structure.
It’s completely humane. The eagle decoy does not harm or physically affect the ospreys at all. It only influences their behavior through visual cue. There are no traps, no chemicals, and no aggressive actions. In fact, it protects ospreys from the dangers of nesting on live towers (electric hazards, etc.). Decoy techniques are widely used and accepted by conservationists as a bird-friendly deterrent. The ospreys simply decide to nest elsewhere, which is ultimately safer for them. So you can stop the nesting problem without any negative impact on the birds’ health or breeding success.
Generally, you do not need a permit just to install a effigy on your own structure. Using a visual deterrent is legal and even encouraged as a preventative measure. What’s illegal is disturbing or removing an active osprey nest without authorization. By using the decoy, you avoid that scenario entirely. No wildlife laws are broken because you’re not touching the birds or their eggs; you’re simply exercising your right to place equipment on your tower. Our deterrent is in line with wildlife regulations and has been used by major companies in compliance with the law. (If you are in a very sensitive area like a wildlife refuge, it’s always good to inform local authorities of your humane deterrence plan, but a decoy is a non-intrusive method and shouldn’t require special permission.)
If a nest is already active (eggs or chicks present), you must wait until the nesting cycle is over before installing the deterrent. Laws protect active nests, so do not remove it without consulting wildlife authorities. Once the young have fledged and the ospreys vacate (typically end of season), you can safely remove the old nest debris and install the Osprey Deterrent Eagle at the tower top. Going forward, the effigy should prevent the ospreys from re-nesting the next season.
In the meantime, if the nest is causing an urgent safety or outage issue, contact your state wildlife agency. They can sometimes grant special permission to relocate a nest, but this is rare. The preferred solution is to be proactive next time with the decoy so you’re not caught in that situation again.
It’s mounted near the pinnacle of the tower, usually just below the beacon light or highest antenna. The decoy comes with a steel mounting bracket that clamps onto the tower structure (no major modification needed). A tower technician will carry the decoy (in parts) up to the top, assemble the eagle figure on its perch, and bolt the bracket to the tower frame. The whole install can be done in well under an hour by experienced climbers.
We advise facing the decoy toward the most open approach (e.g. toward the water or open sky) to maximize its visibility to birds. Once installed, it requires no power or connections, it simply stands there. We have installation guides and can train your crew if needed. The important thing is to place it high and visible; ospreys typically scan the top of a structure when scouting for nest spots, so that’s where the decoy does its job.
No, the Osprey Deterrent Eagle will not interfere with your communications equipment. The decoy is made mostly of non-metallic materials (urethane) and is relatively small compared to the scale of the tower (roughly 32 inches tall). It’s usually installed above or to the side of antennas in a way that it doesn’t block microwave links or antenna line-of-sight. The mounting hardware uses existing tower structure and doesn’t require altering antennas or cabling.
In terms of radio frequency (RF), the presence of the decoy is electrically insignificant. It’s no different than adding a small signage or camera on the tower. Telecom companies, including Verizon, have deployed these decoys on live cell towers with no impact on performance. We do ensure it’s installed clear of any transmitter or sensor (for example, not directly in front of a panel antenna). If your tower is extremely full of equipment, our team can recommend a mounting spot that avoids any conflict. But in all typical scenarios, you won’t notice it’s there except that ospreys stop nesting!
The deterrent is built to tower-industry standards for durability. It’s engineered to handle high winds, heavy rain, snow, and UV exposure. The mounting system is very robust being made with galvanized steel brackets that have been tested on towers in hurricane-prone regions (Florida coasts) and in northern iced conditions.
The decoy itself is made of a tough semi-rigid polyurethane that won’t crack or shatter; it’s also UV-stabilized so it won’t degrade under sun. We’ve had units in the field for years through all seasons without issues.
In an 8-year field test period on live towers, the units proved they can endure the toughest conditions.
Of course, after an extreme event (like a hurricane), it’s wise to inspect all tower attachments, including the decoy, but we’ve designed it so that even if extreme winds occur, the worst-case scenario is the decoy might rotate a bit or, in very unlikely cases detach (though we have not seen that happen with proper installation). The one-year warranty covers any manufacturing defects. If it somehow did suffer weather damage early on, we’d replace it. But overall, it’s a “set and forget” device built for the long haul on outdoor structures.
No power is required. The decoy is a static figure and does not have electronics, motors, or lights. This is intentional, to keep it simple and reliable (and to avoid adding any additional load or complexity to your tower). Maintenance is minimal: we recommend a visual check maybe once or twice a year. Often this can be done from the ground with binoculars or during a routine tower climb. Check that it’s securely bolted and standing correctly.
The materials are long-lasting, so you typically won’t need to repair or repaint it for many years. If, for example, an extreme hail storm scuffed it or a bird made a mess on it, a quick clean or touch-up might be done, but such instances are rare. In short, after installation, the Eagle decoy will do its job continuously with virtually no ongoing effort or operating cost. It’s a one-time investment for persistent protection.
Yes, the solution is proven, both through BDT’s extensive testing and through real deployments by major operators. The decoy concept has a strong basis in nature, and our specific product has a track record of success. For example, Verizon has started using BDT’s Eagle effigy on some cell towers to prevent osprey nests. They have publicly noted that an eagle decoy’s presence is enough to scare off ospreys from making their home on the tower.
Our deterrents have been field-tested over 8+ years on various structures, and we continue to monitor installations to ensure ospreys indeed stay away. The feedback from clients is consistently positive – towers that were previously magnets for ospreys became nest-free after installing the decoy.
It’s important to note that wildlife can be unpredictable, so very rarely, an osprey might attempt to test the waters, especially if they’ve nested there for many years. But even in those cases, alternative measures like adding a second decoy or an alternate nesting platform nearby have resolved it. Overall, in the vast majority of cases, no new nests occur once the Osprey Deterrent Eagle is in place. This is why it’s rapidly being adopted in the telecom industry as the go-to solution.
Aside from telecom, some power utility companies and bridge managers are also now using our decoys for similar osprey issues. With each successful case, the evidence grows that this is the most effective and humane approach available.
The primary target is ospreys, but it can incidentally deter other large birds that view eagles as predators. For instance, some clients found it also discouraged herons, gulls, or even hawks from perching on their towers.
BDT also produces a dedicated vulture deterrent for black vultures and turkey vultures; ospreys and eagles are a different dynamic. The Eagle effigy might provide some deterrent effect for e.g. geese or cormorants on infrastructure, but those species have different behaviors. So, we position this product specifically for ospreys and similar raptor species. If you have issues with vultures roosting, we’d recommend our vulture-specific solution in tandem.
But as a bonus, the presence of a “predator” figure on a tower tends to create a general no-go zone for many birds. It’s unlikely to affect very small birds . For example, sparrows might still sit on the tower arms because they don’t care about eagles since they’re not prey. But it will absolutely address the big nest-builders that cause the major problems.
The best time is during the off-season for osprey nesting, which often is late fall or winter. In northern areas, ospreys migrate south for winter, leaving towers vacant. That’s a perfect window to install the deterrent so it’s ready when they come back in spring. In places like Florida where some ospreys are year-round, aim for a time when any current nests are inactive (post-breeding).
Essentially, as soon as you can safely get on the tower when no active nest is there, do it. Installing early (even well before breeding season) won’t hurt as the decoy can stay up year-round. In fact, leaving it year-round is recommended so that even during scouting or migration periods, any passing ospreys see the tower is “taken.” Also consider installing the decoy before deploying new equipment or upgrades on a tower that had nests removed, to preempt re-nesting. We often say: the best time to install an osprey deterrent was yesterday, the second best time is today.
You can purchase directly from Bird Deterrent Technologies (BDT).
Contact us via our website (bdtllc.com) or phone, and we will provide a quote tailored to your needs. Pricing depends on quantities and any custom mounting considerations. We are the manufacturer, so we offer the best guidance and support. As a one-time investment the price is minimal when comparing that to the potential costs of NOT addressing the issue. You probably already know the financial costs of tower downtime, equipment damage, or paying fines for nest disturbances. The deterrent pays for itself very quickly.
We’d be happy to discuss pricing options and any bulk or project-based arrangements. Keep in mind, installation labor is separate (usually handled by your tower maintenance contractor). But, BDT can coordinate to include installation in the package if needed. Reach out to us, and we’ll ensure you get the product delivered and installed smoothly, so your tower is protected as soon as possible.