Pitch, and bird song identification

Back to the Table of contents

Pitch is simply our perception of the frequency (or wavelength) of a sound, which we describe as high to low. Birds’ range of hearing is similar to our own, and bird song covers the full range to the limits of human hearing, from the lowest hooting sounds of Great Gray Owl or Spruce Grouse to the highest songs of Blackburnian Warbler or Golden-crowned Kinglet.

Most bird vocalizations are complex, and cover a wide range of frequencies, and there is often considerable variation in pitch within a species, making it hard to use pitch alone as an identification clue. Even so, the general pitch of a bird sound is useful for getting into the right “ballpark” for identification.

In the two examples here, the rhythmic pattern of the two songs is similar – a simple two-syllabled phrase repeated several times – and the quality of both could be described as “whistled”, but the pitch of the Black-and-white Warbler song is much higher.

Black-and-white Warbler

Tufted Titmouse

More useful for identifying a species is the relative pitch of parts of a song – upslurred or downslurred notes, or changes in pitch over the course of a song. This requires some practice in order to develop a discerning ear. Many species have very abrupt or very subtle upslurs or downslurs that are helpful for identification but difficult to hear. Paying attention to pitch changes as you listen to bird songs will quickly increase your ability to detect these changes.

Listen to the phrases of this Northern Cardinal song. The notes at the beginning of the song are distinctly upslurred, and the notes after that are sharply downslurred. Try to follow along in the sonagram to get a better sense of the “shape” of each note. As you listen for these features in other songs your ability to hear them will improve.

Northern Cardinal

The sonagram shown above accompanying the Cardinal recording is simply a graph of pitch over time. Time advances from left to right, and sounds with higher pitch appear higher on the graph. The first three notes (at the left) begin low and end high, while the following notes begin high and end low. To learn more about reading sonagrams check out Nathan Pieplow’s excellent series beginning at http://earbirding.com/blog/specs

Unlike the sharply slurred notes of the Cardinal, the song of White-throated Sparrow is a series of clear whistles with almost no change in pitch. This, and the longer notes (slower rhythm), gives it a much more “gentle” quality than the Cardinal. The song of Golden-crowned Sparrow is also a series of simple clear whistles, very similar to White-throated, but one or more of those whistles changes pitch, creating a very different song. In these two species, and most others, such patterns of pitch change are consistent and offer some of the most reliable “field marks” for song identification.

In this White-throated Sparrow song the first note is slightly higher but after that there is almost no change in pitch. In the Golden-crowned Sparrow song the first note is downslurred, not level, and each note after that is lower than the one before, creating an overall descending trend for the pitch of the whole song.

White-throated Sparrow

Golden-crowned Sparrow

The next installment will cover time as an identification clue.


  1. Louise Sibley says

    What is the volume and pitch of black cockatoos
    They have a loud squark as they fly over our house in a group and in a mob
    They take great delight in bombing us with pine cones and honkey nuts.
    L Sibley

  2. Eric Wenocur says

    I’m a musician and audio professional, so it’s natural for me to use bird sounds. Thanks for the handy tips! One of the most confusing things, at least for beginners, is that the same bird will sometimes make a bunch of very different sounds. It took me weeks to realize that some of what I thought were different birds was just the good old Robin!

    The Mockingbird, of course, can really add to the confusion until you learn what’s going on…

  3. Lissa says

    Looking for a bird that is a distinct lower pitch, not repetitive. If you are a musician it is a broken chord in a minor key. the third, then fifth, then the one. ei minor triad C chord e flat, G, C. No tscreeches just a pure 3 note triad

  4. Sharon says

    I am trying to figure out which bird makes a whistle sound the same way humans whistle for their dogs????

    • Rowan says

      Me too, Sharon, I thought it was someone signalling to a sheepdog to begin with but just seen a brown bird flying next to a crow and heard it clearly. Bird was too far away to identify…

  5. Betsy Rosen says

    am trying to identify a bird song that at first sounded like a crow or a jay, but doesn’t match either. It has three gradually ascending note, then five quick descending one. Any help? I live in Marin County, just north of San Francisco.

  6. Darlene says

    We have some visiting birds that make a a two-syllabled sound; the first is a short up-slurred followed by a long down-slurred whistle type of call. The birds look grayish and are larger than a mockingbird. Wings have a slight down-curved shape. Any ideas?

    • says

      Hi Darlene, I’m happy to help but I’ll need a little more to go on. The best thing would be a recording of the call, and any smart phone should be able to get an identifiable recording, or use the video mode on a digital camera (and you could upload a recording through the “contact” tab above). If that’s not possible then some other details of where you are, the habitat, and what the birds were doing (in trees? on open ground? in a flock, etc.) might offer the clue that leads to an ID.

  7. Eliza says

    I’m new to birding and am trying to identify a bird that sings every night outside my window in NYC. It sings a leaping interval somewhere between a fourth and a fifth. Sometimes it does it just once (higher note, lower note). Other times it sings a series of triplets (low-high-low, low-high-low, low-high-low). I’ve looked up the most common birds in NYC and it doesn’t match any of their songs. It’s also not any of the usual suspects at my bird feeder (starlings, blue jays, mourning doves, pigeons and sparrows) and I never hear it during the day… Does anyone have any leads??

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>