You've probably heard them without realizing it. It is a high-pitched, thin, almost needle-like whistle that seems to come from everywhere and nowhere at once. If you are walking through a park or sitting in your backyard and you hear a sound like a tiny silver bell vibrating at a frequency that makes you wonder if your hearing is starting to go, you are likely listening to cedar waxwing bird sounds. These birds are weird. Not in a bad way, but they don't follow the rules that most songbirds follow. They don't have a complex, melodic song to defend a territory or woo a mate. They just... whistle. High. Very high.
Honestly, it’s kind of strange when you think about it. Most birds spend their spring mornings screaming their heads off to tell other birds to stay away. But the cedar waxwing (Bombycilla cedrorum) is a socialite. They like crowds. Because they aren't fighting over a specific patch of dirt, they never evolved those long, rolling melodies you hear from a Wood Thrush or a Northern Cardinal. Instead, their vocalizations are all about keeping the group together while they hunt for berries. It’s a "hey, I'm over here" sound, repeated over and over again.
The High-Frequency Sizzle
When we talk about the specific quality of cedar waxwing bird sounds, the word most experts use is "trill." But that doesn't quite capture it. It’s a bzee-bzee sound. It is incredibly high-pitched—often topping out around 7 to 9 kHz. For context, that is right at the upper limit of what some humans can comfortably hear, especially as we get older. If you’ve spent too many years at loud concerts, you might actually miss the cedar waxwing entirely while your friend next to you is wondering why the trees are buzzing.
There are basically two main sounds they make. First, there is the "high-pitched trill." This is a fast, rhythmic series of notes that sounds like a tiny electric wire shorting out. It lasts maybe half a second. Then there is the "seee" call. This one is flatter, more drawn out, and carries surprisingly far through a canopy of leaves.
Why do they sound so thin?
It comes down to their lifestyle. Cedar waxwings are nomadic. They don't stick to one forest for ten years; they go where the fruit is. If a serviceberry bush is ripe in one neighborhood, they’ll be there for three days and then vanish. Because they move in tight-knit flocks, they don't need to blast a song across an open field. They just need to whisper to the bird three inches away from them on the branch. If you listen closely when a flock lands, the noise is constant. It’s a collective hiss of excitement.
I remember watching a flock of about fifty waxwings descend on a crabapple tree in late February. The sound wasn't a song; it was a texture. It was a wall of high-frequency static that felt like it was vibrating inside my own skull. It’s fascinating because it’s so different from the "cheer-cheer-cheer" of a cardinal. It’s subtle. It’s refined. Sorta elegant, if a sound can be elegant.
Distinguishing Waxwings from the Crowd
One of the biggest mistakes people make is confusing cedar waxwing bird sounds with the calls of a Brown Creeper or even certain insects. Late in the summer, cicadas and grasshoppers can create a similar high-frequency buzz. However, the waxwing has a specific cadence. It’s a bit more "bouncy" than an insect’s steady drone.
- The Pitch: Always high. If you hear a low-pitched hoot or a rich warble, it is definitely not a waxwing.
- The Context: They almost always call while in flight. If you see a group of sleek, masked birds flying in a tight formation and you hear that thin whistle trailing behind them, that’s your confirmation.
- The Tone: It’s thin. Very thin. Like a pulled piece of glass.
Some people think they hear waxwings "singing" in the traditional sense, but David Sibley, arguably the most famous bird illustrator and expert in North America, has noted that they technically lack a true song. Everything they do is a call. They are one of the few passerines (perching birds) that don't have a song to defend a territory. It makes sense—why defend a berry bush that will be empty in two hours? You just eat and move on.
The Mystery of the Bohemian Waxwing
If you live in the northern parts of the U.S. or in Canada, you might run into the Cedar Waxwing’s cousin: the Bohemian Waxwing. Their sounds are incredibly similar, but there’s a nuance there that birders obsess over. The Bohemian Waxwing has a call that is slightly lower in pitch and a bit more "burry" or "rattly."
Think of the Cedar Waxwing as a soprano flute and the Bohemian as a slightly scratchy alto flute. If you’re lucky enough to see them together—which happens sometimes in winter "irruptions"—you can hear the difference. The Bohemian sounds a bit more like a tiny wooden rattle being shaken very quickly.
When and Where to Listen
You’ll hear them most often during two specific times: late spring and mid-winter. In May and June, they are moving around looking for nesting sites, though they nest much later than other birds. They wait for the berries to ripen. Honestly, they are the procrastinators of the bird world. While the robins are already feeding their second brood of chicks, the waxwings are just starting to think about building a nest.
During this time, the cedar waxwing bird sounds are constant. You’ll hear them while they are "hawking" for insects over water. People forget that waxwings eat bugs too. They’ll sit on a branch over a pond, fly out to grab a midge or a dragonfly, and return to the branch, whistling the whole time.
In winter, the sounds change slightly in purpose. It becomes a navigational tool. If one bird finds a fermented mountain ash berry and gets a little "tipsy" (yes, they actually get drunk on fermented fruit), the rest of the flock uses those high whistles to keep the group from scattering. It is a social glue.
Actionable Tips for Birders and Gardeners
If you want to experience these sounds in your own yard, you have to play the long game. You can't just put out a birdseed mix. Cedar waxwings don't care about your sunflower seeds. They want the good stuff.
- Plant Native Berries: This is the only way. Serviceberry (Amelanchier), Cedar (hence the name), Mulberries, and Crabapples are like magnets for them. Once the fruit is ripe, the sounds will follow.
- Water Features: They love a good bath. A birdbath with a dripper or a small fountain will attract them because they are drawn to the sound of moving water.
- Learn the Frequency: Use an app like Merlin Bird ID from the Cornell Lab of Ornithology. It has a "Sound ID" feature that can visualize the frequency. Seeing the "picture" of the sound—a high, thin line on the spectrogram—helps your brain train itself to hear it in the wild.
- Check the Tops of Trees: Waxwings are canopy dwellers. Don't look at the ground. Look at the very tip-top of the tallest tree in the area. They like to sit on the highest dead branch to survey the area before diving into a bush.
Understanding cedar waxwing bird sounds is really about training your ears to listen for what isn't there—the absence of melody, replaced by a crystalline, prehistoric whistle. It’s one of the most distinctive sounds in the North American landscape once you know how to isolate it from the background noise of the wind and the traffic.
To truly master the identification of these birds by ear, spend a morning near a fruiting tree in late summer. Sit quietly and wait for the "bzee" calls to start. Pay attention to how the volume increases as the flock approaches and how the individual whistles overlap into a singular, shimmering wall of sound. This collective vocalization is the hallmark of the species. Once you’ve locked that sound into your memory, you will realize that cedar waxwings have been around you your whole life—you just weren't tuned to their frequency yet.