Online Bird Repeller
A free browser-based sound generator that produces bird deterrent tones in the 1–5 kHz frequency range — the band where birds hear best. Eight synthesized modes including predator cry patterns, distress call sequences, alarm bursts, and frequency sweeps, with automatic optimization for 5 common bird species. Works entirely in your browser with anti-habituation features — no installation or account needed.
Repel pigeons, crows, and sparrows with 8 synthesized deterrent sounds in the 1–5 kHz range
100% in-browser — no audio is sent to any server.
Optimizes frequency range and sound pattern for selected species.
Birds hear best at 1–5 kHz. Ultrasonic devices (above 20 kHz) are ineffective because birds simply cannot hear them. This tool generates synthesized sounds in the 1–5 kHz range — predator cry patterns, distress signal sequences, and alarm tones designed to disturb birds in their most sensitive hearing band.
- Connect external speakers for wider coverage area
- Change sound modes regularly to prevent habituation
- Run at dawn when birds are most active
- Combine with visual deterrents (reflective tape, decoys) for best effect
- Use "Chaos Mode" for maximum unpredictability
- Some sounds are loud — adjust volume before starting
- Do not use near pet birds, poultry, or aviaries
- All sounds are audible to humans
- Be mindful of neighbors when using outdoors
Features
How to Use the Bird Repeller
- Choose a sound mode. Pick one of 8 modes: Predator Screech generates hawk-like tones, Distress Call simulates rapid alarm patterns, Chaos Mode randomly mixes all types, or Custom Tone lets you set exact frequency and waveform.
- Select target species. Choose the bird type you want to deter — pigeons, crows, sparrows, seagulls, or starlings. The tool adjusts frequency ranges and recommends the most effective modes for that species.
- Configure timing and volume. Set burst interval (3–60 seconds), optional auto-stop timer, and volume level. Enable "Randomize intervals" and "Auto-rotate sounds" so birds cannot predict the pattern.
- Press Start and connect speakers. The tool plays deterrent sounds at set intervals. For outdoor use, connect external speakers and point them toward the area where birds gather.
Frequently Asked Questions
Are these real bird recordings or synthesized sounds?
All sounds are synthesized in real time using Web Audio API oscillators and noise generators. They are designed to mimic the frequency patterns of predator calls, distress signals, and alarm bursts — but they are not actual recordings of birds.
Does ultrasonic bird repelling work?
No. Scientific research confirms that most birds cannot hear ultrasonic frequencies above 20 kHz. Birds hear best between 1 and 5 kHz. This tool generates sounds specifically in that audible range, not in the ultrasonic range.
How effective is this tool?
Effectiveness depends on several factors: speaker volume and quality, distance to the birds, species, and whether the birds are already habituated to sounds. The tool works best with external speakers at sufficient volume, combined with other deterrent methods like reflective tape or decoys.
Will the sounds disturb my neighbors?
Yes, all sounds are in the human-audible range (1–5 kHz), so people nearby will hear them. Adjust volume carefully and aim speakers toward the bird problem area, away from neighbors.
Can I leave it running all day?
Yes. Set an auto-stop timer (up to 120 minutes) or let it run indefinitely. Enable "Keep screen on" to prevent your device from sleeping. The anti-habituation features help maintain effectiveness over longer sessions.
Is it free and does it work on mobile?
Completely free with no account required. Works on any device with a modern browser — phones, tablets, laptops, desktops. For best outdoor coverage, connect your device to an external Bluetooth or wired speaker.
